diff --git a/fittrackee_api/fittrackee_api/application/utils.py b/fittrackee_api/fittrackee_api/application/utils.py
index 032c102b..b56ba562 100644
--- a/fittrackee_api/fittrackee_api/application/utils.py
+++ b/fittrackee_api/fittrackee_api/application/utils.py
@@ -11,8 +11,8 @@ def init_config():
     """
     init application configuration if not existing in database
 
-    Note: get some configuration values from env variables (for FitTrackee versions
-    prior to v0.3.0)
+    Note: get some configuration values from env variables
+    (for FitTrackee versions prior to v0.3.0)
     """
     existing_config = AppConfig.query.one_or_none()
     if not existing_config:
diff --git a/fittrackee_client/src/actions/activities.js b/fittrackee_client/src/actions/activities.js
index 997f1084..ceb25a31 100644
--- a/fittrackee_client/src/actions/activities.js
+++ b/fittrackee_client/src/actions/activities.js
@@ -43,6 +43,10 @@ export const addActivity = form => dispatch =>
           dispatch(loadProfile())
           history.push('/')
         }
+      } else if (ret.status === 413) {
+        dispatch(
+          setError('activities|File size is greater than the allowed size')
+        )
       } else {
         dispatch(setError(`activities|${ret.message}`))
       }
diff --git a/fittrackee_client/src/actions/application.js b/fittrackee_client/src/actions/application.js
new file mode 100644
index 00000000..bab6e8ae
--- /dev/null
+++ b/fittrackee_client/src/actions/application.js
@@ -0,0 +1,38 @@
+import FitTrackeeGenericApi from '../fitTrackeeApi'
+import { setError } from './index'
+
+export const setAppConfig = data => ({
+  type: 'SET_APP_CONFIG',
+  data,
+})
+
+export const setAppStats = data => ({
+  type: 'SET_APP_STATS',
+  data,
+})
+
+export const getAppData = target => dispatch =>
+  FitTrackeeGenericApi.getData(target)
+    .then(ret => {
+      if (ret.status === 'success') {
+        if (target === 'config') {
+          dispatch(setAppConfig(ret.data))
+        } else if (target === 'stats/all') {
+          dispatch(setAppStats(ret.data))
+        }
+      } else {
+        dispatch(setError(`application|${ret.message}`))
+      }
+    })
+    .catch(error => dispatch(setError(`application|${error}`)))
+
+export const updateAppConfig = formData => dispatch =>
+  FitTrackeeGenericApi.updateData('config', formData)
+    .then(ret => {
+      if (ret.status === 'success') {
+        dispatch(setAppConfig(ret.data))
+      } else {
+        dispatch(setError(`application|${ret.message}`))
+      }
+    })
+    .catch(error => dispatch(setError(`application|${error}`)))
diff --git a/fittrackee_client/src/actions/stats.js b/fittrackee_client/src/actions/stats.js
index 844378e0..834e65d4 100644
--- a/fittrackee_client/src/actions/stats.js
+++ b/fittrackee_client/src/actions/stats.js
@@ -1,22 +1,6 @@
 import FitTrackeeGenericApi from '../fitTrackeeApi'
 import { setData, setError } from './index'
 
-export const setAppStats = data => ({
-  type: 'SET_APP_STATS',
-  data,
-})
-
-export const getAppStats = () => dispatch =>
-  FitTrackeeGenericApi.getData('stats/all')
-    .then(ret => {
-      if (ret.status === 'success') {
-        dispatch(setAppStats(ret.data))
-      } else {
-        dispatch(setError(`application|${ret.message}`))
-      }
-    })
-    .catch(error => dispatch(setError(`application|${error}`)))
-
 export const getStats = (userId, type, data) => dispatch =>
   FitTrackeeGenericApi.getData(`stats/${userId}/${type}`, data)
     .then(ret => {
diff --git a/fittrackee_client/src/components/Activity/ActivityForms/FormWithGpx.jsx b/fittrackee_client/src/components/Activity/ActivityForms/FormWithGpx.jsx
index eda7addd..3f1a9c0d 100644
--- a/fittrackee_client/src/components/Activity/ActivityForms/FormWithGpx.jsx
+++ b/fittrackee_client/src/components/Activity/ActivityForms/FormWithGpx.jsx
@@ -5,17 +5,27 @@ import { connect } from 'react-redux'
 import { setLoading } from '../../../actions/index'
 import { addActivity, editActivity } from '../../../actions/activities'
 import { history } from '../../../index'
-import { fileSizeLimit, gpxLimit, zipSizeLimit } from '../../../utils'
+import { getFileSize } from '../../../utils'
 import { translateSports } from '../../../utils/activities'
 
 function FormWithGpx(props) {
-  const { activity, loading, onAddActivity, onEditActivity, sports, t } = props
+  const {
+    activity,
+    appConfig,
+    loading,
+    onAddActivity,
+    onEditActivity,
+    sports,
+    t,
+  } = props
   const sportId = activity ? activity.sport_id : ''
   const translatedSports = translateSports(sports, t, true)
-  // prettier-ignore
-  const zipTooltip =
-    `${t('activities:no folder inside')}, ${gpxLimit} ${
-    t('activities:files max')}, ${t('activities:max size')}: ${zipSizeLimit}`
+  const zipTooltip = `${t('activities:no folder inside')}, ${
+    appConfig.gpx_limit_import
+  } ${t('activities:files max')}, ${t('activities:max size')}: ${getFileSize(
+    appConfig.max_zip_file_size
+  )}`
+  const fileSizeLimit = getFileSize(appConfig.max_single_file_size)
   return (
     <form
       encType="multipart/form-data"
@@ -130,6 +140,7 @@ function FormWithGpx(props) {
 
 export default connect(
   state => ({
+    appConfig: state.application.config,
     loading: state.loading,
   }),
   dispatch => ({
diff --git a/fittrackee_client/src/components/Admin/AdminDashboard.jsx b/fittrackee_client/src/components/Admin/AdminDashboard.jsx
index bead8429..cbae1f7d 100644
--- a/fittrackee_client/src/components/Admin/AdminDashboard.jsx
+++ b/fittrackee_client/src/components/Admin/AdminDashboard.jsx
@@ -3,15 +3,16 @@ import { Helmet } from 'react-helmet'
 
 import AdminStats from './AdminStats'
 
-export default function AdminDashboard() {
+export default function AdminDashboard(props) {
+  const { t } = props
   return (
     <div>
       <Helmet>
-        <title>FitTrackee - Administration</title>
+        <title>{t('administration:FitTrackee administration')}</title>
       </Helmet>
       <div className="card activity-card">
         <div className="card-header">
-          <strong>FitTrackee administration</strong>
+          <strong>{t('administration:FitTrackee administration')}</strong>
         </div>
         <div className="card-body">
           <AdminStats />
diff --git a/fittrackee_client/src/components/Admin/AdminStats.jsx b/fittrackee_client/src/components/Admin/AdminStats.jsx
index 13ace5c2..fa8735f6 100644
--- a/fittrackee_client/src/components/Admin/AdminStats.jsx
+++ b/fittrackee_client/src/components/Admin/AdminStats.jsx
@@ -2,7 +2,7 @@ import React from 'react'
 import { withTranslation } from 'react-i18next'
 import { connect } from 'react-redux'
 
-import { getAppStats } from '../../actions/stats'
+import { getAppData } from '../../actions/application'
 
 class AdminStats extends React.Component {
   componentDidMount() {
@@ -80,7 +80,7 @@ export default withTranslation()(
     }),
     dispatch => ({
       loadAppStats: () => {
-        dispatch(getAppStats())
+        dispatch(getAppData('stats/all'))
       },
     })
   )(AdminStats)
diff --git a/fittrackee_client/src/components/Admin/Application/Config.jsx b/fittrackee_client/src/components/Admin/Application/Config.jsx
new file mode 100644
index 00000000..cdaf667a
--- /dev/null
+++ b/fittrackee_client/src/components/Admin/Application/Config.jsx
@@ -0,0 +1,89 @@
+import React from 'react'
+import { Helmet } from 'react-helmet'
+
+import Message from '../../Common/Message'
+import { history } from '../../../index'
+import { getFileSize } from '../../../utils'
+
+export default function Config({ appConfig, message, t, updateIsInEdition }) {
+  return (
+    <div>
+      <Helmet>
+        <title>
+          FitTrackee - {t('administration:Application configuration')}
+        </title>
+      </Helmet>
+      <Message message={message} t={t} />
+      <div className="container">
+        <div className="row">
+          <div className="col-md-12">
+            <div className="card">
+              <div className="card-header">
+                {t('administration:Application configuration')}
+              </div>
+              <div className="card-body">
+                <div className="row">
+                  <div className="col">
+                    <table className="table">
+                      <tbody>
+                        <tr>
+                          <th scope="row">
+                            {t('administration:Enable registration')}:
+                          </th>
+                          <td>
+                            {appConfig.registration
+                              ? t('common:yes')
+                              : t('common:no')}
+                          </td>
+                        </tr>
+                        <tr>
+                          <th scope="row">
+                            {t('administration:Max. number of active users')}:
+                          </th>
+                          <td>{appConfig.max_users}</td>
+                        </tr>
+                        <tr>
+                          <th scope="row">
+                            {t(
+                              'administration:Max. size of ' + 'uploaded files'
+                            )}
+                            :
+                          </th>
+                          <td>{getFileSize(appConfig.max_single_file_size)}</td>
+                        </tr>
+                        <tr>
+                          <th scope="row">
+                            {t('administration:Max. size of zip archive')}:
+                          </th>
+                          <td>{getFileSize(appConfig.max_zip_file_size)}</td>
+                        </tr>
+                        <tr>
+                          <th scope="row">
+                            {t('administration:Max. files of zip archive')}:
+                          </th>
+                          <td>{appConfig.gpx_limit_import}</td>
+                        </tr>
+                      </tbody>
+                    </table>
+                    <input
+                      type="submit"
+                      className="btn btn-primary btn-lg btn-block"
+                      onClick={() => updateIsInEdition()}
+                      value={t('common:Edit')}
+                    />
+                    <input
+                      type="submit"
+                      className="btn btn-secondary btn-lg btn-block"
+                      onClick={() => history.push('/admin')}
+                      value={t('common:Back')}
+                    />
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        </div>
+      </div>
+    </div>
+  )
+}
diff --git a/fittrackee_client/src/components/Admin/Application/ConfigForm.jsx b/fittrackee_client/src/components/Admin/Application/ConfigForm.jsx
new file mode 100644
index 00000000..37c4a2c2
--- /dev/null
+++ b/fittrackee_client/src/components/Admin/Application/ConfigForm.jsx
@@ -0,0 +1,198 @@
+import React from 'react'
+import { connect } from 'react-redux'
+import { Helmet } from 'react-helmet'
+
+import Message from '../../Common/Message'
+import { updateAppConfig } from '../../../actions/application'
+import { getFileSizeInMB } from '../../../utils'
+
+class AdminApplication extends React.Component {
+  constructor(props, context) {
+    super(props, context)
+    this.state = {
+      formData: {},
+    }
+  }
+  componentDidMount() {
+    this.initForm()
+  }
+
+  initForm() {
+    const { appConfig } = this.props
+    const formData = {}
+    Object.keys(appConfig).map(k =>
+      appConfig[k] === null
+        ? (formData[k] = '')
+        : ['max_single_file_size', 'max_zip_file_size'].includes(k)
+        ? (formData[k] = getFileSizeInMB(appConfig[k]))
+        : (formData[k] = appConfig[k])
+    )
+    this.setState({ formData })
+  }
+
+  handleFormChange(e) {
+    const { formData } = this.state
+    if (e.target.name === 'registration') {
+      formData[e.target.name] = e.target.checked
+    } else {
+      formData[e.target.name] = +e.target.value
+    }
+    this.setState(formData)
+  }
+
+  render() {
+    const {
+      message,
+      onHandleConfigFormSubmit,
+      t,
+      updateIsInEdition,
+    } = this.props
+    const { formData } = this.state
+    return (
+      <div>
+        <Helmet>
+          <title>
+            FitTrackee - {t('administration:Application configuration')}
+          </title>
+        </Helmet>
+        {message && <Message message={message} t={t} />}
+        {Object.keys(formData).length > 0 && (
+          <div className="container">
+            <div className="row">
+              <div className="col-md-12">
+                <div className="card">
+                  <div className="card-header">
+                    {t('administration:Application configuration')}
+                  </div>
+                  <div className="card-body">
+                    <form
+                      className="app-config-form"
+                      onSubmit={event => {
+                        event.preventDefault()
+                        onHandleConfigFormSubmit(formData)
+                        updateIsInEdition()
+                      }}
+                    >
+                      <div className="form-group row">
+                        <label
+                          className="col-sm-6 col-form-label"
+                          htmlFor="registration"
+                        >
+                          {t('administration:Enable registration')}:
+                        </label>
+                        <input
+                          className="col-sm-5"
+                          id="registration"
+                          name="registration"
+                          type="checkbox"
+                          checked={formData.registration}
+                          onChange={e => this.handleFormChange(e)}
+                        />
+                      </div>
+                      <div className="form-group row">
+                        <label
+                          className="col-sm-6 col-form-label"
+                          htmlFor="max_users"
+                        >
+                          {t('administration:Max. number of active users')}:
+                        </label>
+                        <input
+                          className="col-sm-5"
+                          id="max_users"
+                          name="max_users"
+                          type="number"
+                          min="0"
+                          value={formData.max_users}
+                          onChange={e => this.handleFormChange(e)}
+                        />
+                      </div>
+                      <div className="form-group row">
+                        <label
+                          className="col-sm-6 col-form-label"
+                          htmlFor="max_single_file_size"
+                        >
+                          {t(
+                            'administration:Max. size of uploaded files (in Mb)'
+                          )}
+                          :
+                        </label>
+                        <input
+                          className="col-sm-5"
+                          id="max_single_file_size"
+                          name="max_single_file_size"
+                          type="number"
+                          step="0.1"
+                          min="0"
+                          value={formData.max_single_file_size}
+                          onChange={e => this.handleFormChange(e)}
+                        />
+                      </div>
+                      <div className="form-group row">
+                        <label
+                          className="col-sm-6 col-form-label"
+                          htmlFor="max_zip_file_size"
+                        >
+                          {t('administration:Max. size of zip archive (in Mb)')}
+                          :
+                        </label>
+                        <input
+                          className="col-sm-5"
+                          id="max_zip_file_size"
+                          name="max_zip_file_size"
+                          type="number"
+                          step="0.1"
+                          min="0"
+                          value={formData.max_zip_file_size}
+                          onChange={e => this.handleFormChange(e)}
+                        />
+                      </div>
+                      <div className="form-group row">
+                        <label
+                          className="col-sm-6 col-form-label"
+                          htmlFor="gpx_limit_import"
+                        >
+                          {t('administration:Max. files of zip archive')}
+                        </label>
+                        <input
+                          className="col-sm-5"
+                          id="gpx_limit_import"
+                          name="gpx_limit_import"
+                          type="number"
+                          min="0"
+                          value={formData.gpx_limit_import}
+                          onChange={e => this.handleFormChange(e)}
+                        />
+                      </div>
+                      <input
+                        type="submit"
+                        className="btn btn-primary btn-lg btn-block"
+                        value={t('common:Submit')}
+                      />
+                      <input
+                        type="submit"
+                        className="btn btn-secondary btn-lg btn-block"
+                        onClick={() => updateIsInEdition()}
+                        value={t('common:Cancel')}
+                      />
+                    </form>
+                  </div>
+                </div>
+              </div>
+            </div>
+          </div>
+        )}
+      </div>
+    )
+  }
+}
+
+export default connect(
+  () => ({}),
+  dispatch => ({
+    onHandleConfigFormSubmit: formData => {
+      formData.max_single_file_size *= 1048576
+      formData.max_zip_file_size *= 1048576
+      dispatch(updateAppConfig(formData))
+    },
+  })
+)(AdminApplication)
diff --git a/fittrackee_client/src/components/Admin/Application/index.jsx b/fittrackee_client/src/components/Admin/Application/index.jsx
new file mode 100644
index 00000000..db55b454
--- /dev/null
+++ b/fittrackee_client/src/components/Admin/Application/index.jsx
@@ -0,0 +1,54 @@
+import React from 'react'
+import { connect } from 'react-redux'
+import { Helmet } from 'react-helmet'
+
+import Config from './Config'
+import ConfigForm from './ConfigForm'
+import Message from '../../Common/Message'
+
+class AdminApplication extends React.Component {
+  constructor(props, context) {
+    super(props, context)
+    this.state = {
+      isInEdition: false,
+    }
+  }
+
+  render() {
+    const { appConfig, message, t } = this.props
+    const { isInEdition } = this.state
+    return (
+      <div>
+        <Helmet>
+          <title>FitTrackee - {t('administration:Administration')}</title>
+        </Helmet>
+        {message && <Message message={message} t={t} />}
+        {isInEdition ? (
+          <ConfigForm
+            appConfig={appConfig}
+            message={message}
+            updateIsInEdition={() => {
+              this.setState({ isInEdition: false })
+            }}
+            t={t}
+          />
+        ) : (
+          <Config
+            appConfig={appConfig}
+            message={message}
+            t={t}
+            updateIsInEdition={() => {
+              this.setState({ isInEdition: true })
+            }}
+          />
+        )}
+      </div>
+    )
+  }
+}
+
+export default connect(state => ({
+  appConfig: state.application.config,
+  message: state.message,
+  user: state.user,
+}))(AdminApplication)
diff --git a/fittrackee_client/src/components/Admin/index.jsx b/fittrackee_client/src/components/Admin/index.jsx
index 0e6c4191..7d5e1f65 100644
--- a/fittrackee_client/src/components/Admin/index.jsx
+++ b/fittrackee_client/src/components/Admin/index.jsx
@@ -2,14 +2,13 @@ import React from 'react'
 import { Helmet } from 'react-helmet'
 import { withTranslation } from 'react-i18next'
 import { connect } from 'react-redux'
-import { Link, Redirect, Route, Switch } from 'react-router-dom'
+import { Link, Route, Switch } from 'react-router-dom'
 
+import AdminApplication from './Application'
 import AdminDashboard from './AdminDashboard'
 import AdminMenu from './AdminMenu'
 import AdminSports from './Sports'
-import AccessDenied from './../Others/AccessDenied'
 import NotFound from './../Others/NotFound'
-import { isLoggedIn } from '../../utils'
 
 function Admin(props) {
   const { t, user } = props
@@ -19,47 +18,48 @@ function Admin(props) {
         <title>FitTrackee - {t('administration:Administration')}</title>
       </Helmet>
       <div className="container dashboard">
-        <div className="row">
-          <div className="col-md-3">
-            <div className="card activity-card">
-              <div className="card-header">
-                <Link
-                  to={{
-                    pathname: '/admin/',
-                  }}
-                >
-                  {t('administration:Administration')}
-                </Link>
-              </div>
-              <div className="card-body">
-                <AdminMenu t={t} />
+        {user.admin ? (
+          <div className="row">
+            <div className="col-md-3">
+              <div className="card activity-card">
+                <div className="card-header">
+                  <Link
+                    to={{
+                      pathname: '/admin/',
+                    }}
+                  >
+                    {t('administration:Administration')}
+                  </Link>
+                </div>
+                <div className="card-body">
+                  <AdminMenu t={t} />
+                </div>
               </div>
             </div>
+            <div className="col-md-9">
+              <Switch>
+                <Route
+                  exact
+                  path="/admin"
+                  render={() => <AdminDashboard t={t} />}
+                />
+                <Route
+                  exact
+                  path="/admin/application"
+                  render={() => <AdminApplication t={t} />}
+                />
+                <Route
+                  exact
+                  path="/admin/sports"
+                  render={() => <AdminSports t={t} />}
+                />
+                <Route component={NotFound} />
+              </Switch>
+            </div>
           </div>
-          <div className="col-md-9">
-            {isLoggedIn() ? (
-              user.admin ? (
-                <Switch>
-                  <Route
-                    exact
-                    path="/admin"
-                    render={() => <AdminDashboard t={t} />}
-                  />
-                  <Route
-                    exact
-                    path="/admin/sports"
-                    render={() => <AdminSports t={t} />}
-                  />
-                  <Route component={NotFound} />
-                </Switch>
-              ) : (
-                <AccessDenied />
-              )
-            ) : (
-              <Redirect to="/login" />
-            )}
-          </div>
-        </div>
+        ) : (
+          <NotFound />
+        )}
       </div>
     </div>
   )
diff --git a/fittrackee_client/src/components/App.css b/fittrackee_client/src/components/App.css
index b65f0290..1ccb9f5b 100644
--- a/fittrackee_client/src/components/App.css
+++ b/fittrackee_client/src/components/App.css
@@ -177,6 +177,10 @@ label {
   margin-left: 10px;
 }
 
+.app-config-form label {
+  font-weight: bold;
+}
+
 .card {
   text-align: left;
 }
diff --git a/fittrackee_client/src/components/App.jsx b/fittrackee_client/src/components/App.jsx
index 2a240599..f7483fe3 100644
--- a/fittrackee_client/src/components/App.jsx
+++ b/fittrackee_client/src/components/App.jsx
@@ -1,4 +1,5 @@
 import React from 'react'
+import { connect } from 'react-redux'
 import { Redirect, Route, Switch } from 'react-router-dom'
 
 import './App.css'
@@ -14,13 +15,17 @@ import Profile from './User/Profile'
 import ProfileEdit from './User/ProfileEdit'
 import Statistics from './Statistics'
 import UserForm from './User/UserForm'
+import { getAppData } from '../actions/application'
 import { isLoggedIn } from '../utils'
 
-export default class App extends React.Component {
+class App extends React.Component {
   constructor(props) {
     super(props)
     this.props = props
   }
+  componentDidMount() {
+    this.props.loadAppConfig()
+  }
 
   render() {
     return (
@@ -74,7 +79,12 @@ export default class App extends React.Component {
           <Route exact path="/activities/history" component={Activities} />
           <Route exact path="/activities/statistics" component={Statistics} />
           <Route path="/activities" component={Activity} />
-          <Route path="/admin" component={Admin} />
+          <Route
+            path="/admin"
+            render={() =>
+              isLoggedIn() ? <Admin /> : <UserForm formType={'login'} />
+            }
+          />
           <Route component={NotFound} />
         </Switch>
         <Footer />
@@ -82,3 +92,11 @@ export default class App extends React.Component {
     )
   }
 }
+export default connect(
+  () => ({}),
+  dispatch => ({
+    loadAppConfig: () => {
+      dispatch(getAppData('config'))
+    },
+  })
+)(App)
diff --git a/fittrackee_client/src/components/Others/AccessDenied.jsx b/fittrackee_client/src/components/Others/AccessDenied.jsx
index cae24914..500d351f 100644
--- a/fittrackee_client/src/components/Others/AccessDenied.jsx
+++ b/fittrackee_client/src/components/Others/AccessDenied.jsx
@@ -1,16 +1,24 @@
 import React from 'react'
 import { Helmet } from 'react-helmet'
 
-export default function AccessDenied() {
+export default function AccessDenied(props) {
+  const { t } = props
   return (
     <div>
       <Helmet>
-        <title>FitTrackee - Access denied</title>
+        <title>FitTrackee - {t('Access denied')}</title>
       </Helmet>
-      <h1 className="page-title">Access denied</h1>
-      <p className="App-center">
-        {"You don't have permissions to access this page."}
-      </p>
+      <div className="row">
+        <div className="col-2" />
+        <div className="card col-8">
+          <div className="card-body">
+            <div className="text-center">
+              {t("You don't have permissions to access this page.")}
+            </div>
+          </div>
+        </div>
+        <div className="col-2" />
+      </div>
     </div>
   )
 }
diff --git a/fittrackee_client/src/components/Others/NotFound.jsx b/fittrackee_client/src/components/Others/NotFound.jsx
index 72a49fa4..6977dfd3 100644
--- a/fittrackee_client/src/components/Others/NotFound.jsx
+++ b/fittrackee_client/src/components/Others/NotFound.jsx
@@ -1,13 +1,15 @@
 import React from 'react'
 import { Helmet } from 'react-helmet'
+import { useTranslation } from 'react-i18next'
 
 export default function NotFound() {
+  const { t } = useTranslation()
   return (
     <div>
       <Helmet>
         <title>fittrackee - 404</title>
       </Helmet>
-      <h1 className="page-title">Page not found</h1>
+      <h1 className="page-title">{t('Page not found')}</h1>
     </div>
   )
 }
diff --git a/fittrackee_client/src/components/User/Form.jsx b/fittrackee_client/src/components/User/Form.jsx
index 075cdc96..b674a36e 100644
--- a/fittrackee_client/src/components/User/Form.jsx
+++ b/fittrackee_client/src/components/User/Form.jsx
@@ -3,7 +3,6 @@ import { useTranslation } from 'react-i18next'
 import { Helmet } from 'react-helmet'
 
 import { history } from '../../index'
-import { isRegistrationAllowed } from '../../utils'
 
 export default function Form(props) {
   const { t } = useTranslation()
@@ -22,7 +21,7 @@ export default function Form(props) {
           <div className="col-md-6">
             <hr />
             <br />
-            {props.formType === 'register' && !isRegistrationAllowed ? (
+            {props.formType === 'register' && !props.isRegistrationAllowed ? (
               <div className="card">
                 <div className="card-body">Registration is disabled.</div>
                 <div className="card-body">
diff --git a/fittrackee_client/src/components/User/Profile.jsx b/fittrackee_client/src/components/User/Profile.jsx
index 3c1c8014..c41914e3 100644
--- a/fittrackee_client/src/components/User/Profile.jsx
+++ b/fittrackee_client/src/components/User/Profile.jsx
@@ -7,15 +7,23 @@ import { Link } from 'react-router-dom'
 
 import Message from '../Common/Message'
 import { deletePicture, uploadPicture } from '../../actions/user'
-import { apiUrl, fileSizeLimit } from '../../utils'
+import { apiUrl, getFileSize } from '../../utils'
 
-function Profile({ message, onDeletePicture, onUploadPicture, t, user }) {
+function Profile({
+  appConfig,
+  message,
+  onDeletePicture,
+  onUploadPicture,
+  t,
+  user,
+}) {
   const createdAt = user.created_at
     ? format(new Date(user.created_at), 'dd/MM/yyyy HH:mm')
     : ''
   const birthDate = user.birth_date
     ? format(new Date(user.birth_date), 'dd/MM/yyyy')
     : ''
+  const fileSizeLimit = getFileSize(appConfig.max_single_file_size)
   return (
     <div>
       <Helmet>
@@ -118,6 +126,7 @@ function Profile({ message, onDeletePicture, onUploadPicture, t, user }) {
 export default withTranslation()(
   connect(
     state => ({
+      appConfig: state.application.config,
       message: state.message,
       user: state.user,
     }),
diff --git a/fittrackee_client/src/components/User/UserForm.jsx b/fittrackee_client/src/components/User/UserForm.jsx
index 20c04c1f..85616e67 100644
--- a/fittrackee_client/src/components/User/UserForm.jsx
+++ b/fittrackee_client/src/components/User/UserForm.jsx
@@ -42,6 +42,7 @@ class UserForm extends React.Component {
   render() {
     const {
       formType,
+      isRegistrationAllowed,
       message,
       messages,
       onHandleUserFormSubmit,
@@ -56,6 +57,7 @@ class UserForm extends React.Component {
           <div>
             <Message message={message} messages={messages} t={t} />
             <Form
+              isRegistrationAllowed={isRegistrationAllowed}
               formType={formType}
               userForm={formData}
               onHandleFormChange={event => this.onHandleFormChange(event)}
@@ -73,6 +75,7 @@ class UserForm extends React.Component {
 export default withTranslation()(
   connect(
     state => ({
+      isRegistrationAllowed: state.application.config.is_registration_enabled,
       location: state.router.location,
       message: state.message,
       messages: state.messages,
diff --git a/fittrackee_client/src/fitTrackeeApi/index.js b/fittrackee_client/src/fitTrackeeApi/index.js
index 4fe94c53..2d9d98a1 100644
--- a/fittrackee_client/src/fitTrackeeApi/index.js
+++ b/fittrackee_client/src/fitTrackeeApi/index.js
@@ -48,7 +48,7 @@ export default class FitTrackeeApi {
 
   static updateData(target, data) {
     const params = {
-      url: `${target}/${data.id}`,
+      url: `${target}${data.id ? `/${data.id}` : ''}`,
       method: 'PATCH',
       body: data,
       type: 'application/json',
diff --git a/fittrackee_client/src/locales/en/administration.json b/fittrackee_client/src/locales/en/administration.json
index fda0ee85..282d5fbb 100644
--- a/fittrackee_client/src/locales/en/administration.json
+++ b/fittrackee_client/src/locales/en/administration.json
@@ -4,12 +4,21 @@
   "activities exist": "activities exist",
   "Administration": "Administration",
   "Application": "Application",
+  "Application configuration": "Application configuration",
   "Back": "Back",
   "Disable": "Disable",
   "Enable": "Enable",
+  "Enable registration": "Enable registration",
+  "FitTrackee administration": "FitTrackee administration",
   "id": "id",
   "Image": "Image",
   "Label": "Label",
+  "Max. number of active users": "Max. number of active users",
+  "Max. files of zip archive": "Max. files of zip archive",
+  "Max. size of uploaded files": "Max. size of uploaded files",
+  "Max. size of uploaded files (in Mb)": "Max. size of uploaded files (in Mb)",
+  "Max. size of zip archive": "Max. size of zip archive",
+  "Max. size of zip archive (in Mb)": "Max. size of zip archive (in Mb)",
   "Sports": "Sports",
   "user": "user",
   "Users": "Users",
diff --git a/fittrackee_client/src/locales/en/common.json b/fittrackee_client/src/locales/en/common.json
index b30cd8dc..7b384925 100644
--- a/fittrackee_client/src/locales/en/common.json
+++ b/fittrackee_client/src/locales/en/common.json
@@ -1,14 +1,18 @@
 {
   "Add workout": "Add workout",
+  "Back": "Back",
   "Cancel": "Cancel",
   "Dashboard": "Dashboard",
+  "Edit": "Edit",
   "day": "day",
   "days": "days",
   "Login": "Login",
   "Logout": "Logout",
   "No": "No",
+  "no": "no",
   "No records.": "No records.",
   "No workouts.": "No workouts.",
+  "Page not found": "Page not found",
   "Register": "Register",
   "Statistics": "Statistics",
   "Sport": "Sport",
@@ -21,5 +25,6 @@
   "Workouts": "Workouts",
   "workout": "workout",
   "workouts": "workouts",
-  "Yes": "Yes"
+  "Yes": "Yes",
+  "yes": "yes"
 }
diff --git a/fittrackee_client/src/locales/en/messages.json b/fittrackee_client/src/locales/en/messages.json
index 9998c5ce..682ff6a5 100644
--- a/fittrackee_client/src/locales/en/messages.json
+++ b/fittrackee_client/src/locales/en/messages.json
@@ -9,6 +9,7 @@
   "Error. Registration is disabled.": "Error. Registration is disabled.",
   "Error. Please try again or contact the administrator.": "Error. Please try again or contact the administrator.",
   "File extension not allowed.": "File extension not allowed.",
+  "File size is greater than the allowed size": "File size is greater than the allowed size",
   "Incorrect id": "Incorrect id",
   "Invalid credentials.": "Invalid credentials.",
   "Invalid payload.": "Invalid payload.",
diff --git a/fittrackee_client/src/locales/fr/administration.json b/fittrackee_client/src/locales/fr/administration.json
index 71ff2c0c..5db5224d 100644
--- a/fittrackee_client/src/locales/fr/administration.json
+++ b/fittrackee_client/src/locales/fr/administration.json
@@ -4,12 +4,21 @@
   "Administration": "Administration",
   "activities exist": "des activités existent",
   "Application": "Application",
+  "Application configuration": "Configuration de l'application",
   "Back": "Retour",
   "Disable": "désactiver",
   "Enable": "activer",
+  "Enable registration": "Activer les inscriptions",
+  "FitTrackee administration": "Administration de FitTrackee",
   "id": "id",
   "Image": "Image",
   "Label": "Label",
+  "Max. number of active users": "Nombre maximum d'utilisateurs actifs",
+  "Max. files of zip archive": "Nombre max. de fichiers dans une archive zip",
+  "Max. size of uploaded files": "Taille max. des fichiers",
+  "Max. size of uploaded files (in Mb)": "Taille max. des fichiers (en Mo)",
+  "Max. size of zip archive": "Taille max. des archives zip",
+  "Max. size of zip archive (in Mb)": "Taille max. des archives zip (en Mo)",
   "Sports": "Sports",
   "user": "user",
   "Users": "Utilisateurs",
diff --git a/fittrackee_client/src/locales/fr/common.json b/fittrackee_client/src/locales/fr/common.json
index 0e8415be..0018b859 100644
--- a/fittrackee_client/src/locales/fr/common.json
+++ b/fittrackee_client/src/locales/fr/common.json
@@ -1,14 +1,18 @@
 {
   "Add workout": "Ajouter une activité",
+  "Back": "Revenir à la page précédente",
   "Cancel": "Annuler",
   "Dashboard": "Tableau de Bord",
+  "Edit": "Modifier",
   "day": "jour",
   "days": "jours",
   "Login": "Se connecter",
   "Logout": "Se déconnecter",
   "No": "Non",
+  "no": "non",
   "No records.": "Pas de records.",
   "No workouts.": "Pas d'activités.",
+  "Page not found": "Page introuvable",
   "Register": "S'inscrire",
   "Statistics": "Statistiques",
   "Sport": "Sport",
@@ -21,5 +25,6 @@
   "Workouts": "Activités",
   "workout": "activité",
   "workouts": "activités",
-  "Yes": "Oui"
+  "Yes": "Oui",
+  "yes": "oui"
 }
diff --git a/fittrackee_client/src/locales/fr/messages.json b/fittrackee_client/src/locales/fr/messages.json
index b58acceb..d48efe94 100644
--- a/fittrackee_client/src/locales/fr/messages.json
+++ b/fittrackee_client/src/locales/fr/messages.json
@@ -9,6 +9,7 @@
   "Error. Registration is disabled.": "Erreur. L'inscription est désactivée.",
   "Error. Please try again or contact the administrator.": "Erreur. Veuillez réessayer ou contacter l'administrateur",
   "File extension not allowed.": "Extension de fichier non autorisée.",
+  "File size is greater than the allowed size": "La taille du fichier est supérieure à la limite autorisée",
   "Incorrect id": "Id incorrect",
   "Invalid credentials.": "Identifiants invalides.",
   "Invalid payload.": "Données incorrectes.",
diff --git a/fittrackee_client/src/reducers/index.js b/fittrackee_client/src/reducers/index.js
index 77d46e70..ba0901a5 100644
--- a/fittrackee_client/src/reducers/index.js
+++ b/fittrackee_client/src/reducers/index.js
@@ -34,6 +34,12 @@ const activities = (state = initial.activities, action) => {
 }
 
 const application = (state = initial.application, action) => {
+  if (action.type === 'SET_APP_CONFIG') {
+    return {
+      ...state,
+      config: action.data,
+    }
+  }
   if (action.type === 'SET_APP_STATS') {
     return {
       ...state,
diff --git a/fittrackee_client/src/reducers/initial.js b/fittrackee_client/src/reducers/initial.js
index 2c24dbdd..467dd9f1 100644
--- a/fittrackee_client/src/reducers/initial.js
+++ b/fittrackee_client/src/reducers/initial.js
@@ -14,6 +14,14 @@ export default {
   },
   application: {
     statistics: {},
+    config: {
+      gpx_limit_import: null,
+      is_registration_enabled: null,
+      max_single_file_size: null,
+      max_users: null,
+      max_zip_file_size: null,
+      registration: null,
+    },
   },
   calendarActivities: {
     ...emptyData,
diff --git a/fittrackee_client/src/utils/index.js b/fittrackee_client/src/utils/index.js
index 6fe30764..15115dd1 100644
--- a/fittrackee_client/src/utils/index.js
+++ b/fittrackee_client/src/utils/index.js
@@ -2,7 +2,7 @@ import { format, parse } from 'date-fns'
 import { DateTime } from 'luxon'
 
 const suffixes = ['bytes', 'KB', 'MB', 'GB', 'TB']
-const getFileSize = fileSize => {
+export const getFileSize = fileSize => {
   const i = Math.floor(Math.log(fileSize) / Math.log(1024))
   return (
     (!fileSize && '0 bytes') ||
@@ -10,21 +10,17 @@ const getFileSize = fileSize => {
   )
 }
 
+export const getFileSizeInMB = fileSize => {
+  const value = fileSize / 1048576
+  return (!fileSize && 0) || +value.toFixed(2)
+}
+
 export const version = '0.3.0-beta' // version stored in 'utils' for now
 export const apiUrl = `${process.env.REACT_APP_API_URL}/api/`
 /* prettier-ignore */
 export const thunderforestApiKey = `${
   process.env.REACT_APP_THUNDERFOREST_API_KEY
 }`
-export const gpxLimit = `${process.env.REACT_APP_GPX_LIMIT_IMPORT}`
-export const fileSizeLimit = getFileSize(
-  +process.env.REACT_APP_MAX_SINGLE_FILE_SIZE
-)
-export const zipSizeLimit = getFileSize(
-  +process.env.REACT_APP_MAX_ZIP_FILE_SIZE
-)
-export const isRegistrationAllowed =
-  process.env.REACT_APP_ALLOW_REGISTRATION !== 'false'
 
 export const isLoggedIn = () => !!window.localStorage.authToken
 
@@ -56,7 +52,11 @@ export const createApiRequest = params => {
   }
   const request = new Request(`${apiUrl}${params.url}`, requestParams)
   return fetch(request)
-    .then(response => (params.method === 'DELETE' ? response : response.json()))
+    .then(response =>
+      params.method === 'DELETE' || response.status === 413
+        ? response
+        : response.json()
+    )
     .catch(error => {
       console.error(error)
       return new Error('An error occurred. Please contact the administrator.')