diff --git a/Sources/dafl_project_flutter/lib/api/in_app_browser.dart b/Sources/dafl_project_flutter/lib/api/in_app_browser.dart
index a474e46..3223763 100644
--- a/Sources/dafl_project_flutter/lib/api/in_app_browser.dart
+++ b/Sources/dafl_project_flutter/lib/api/in_app_browser.dart
@@ -1,4 +1,5 @@
 import 'dart:io';
+import 'package:flutter/cupertino.dart';
 import 'package:flutter_inappwebview/flutter_inappwebview.dart';
 import '../exceptions/api_exception.dart';
 import '../main.dart';
@@ -24,13 +25,16 @@ class MyInAppBrowser extends InAppBrowser {
 
   @override
   Future onLoadStart(url) async {
+    bool isError = false;
     if (url!.origin + url.path == MyApp.api.redirectUri) {
       try {
         await MyApp.api.requestUserAuthorization(url);
       } on ApiException {
-        // TODO : add notification to show that an error occured
+        notify(5, MyApp.controller.navigatorKey);
+        isError = true;
       } finally {
         close();
+        if (!isError) notify(2, MyApp.controller.navigatorKey, isError: false);
       }
     }
   }
diff --git a/Sources/dafl_project_flutter/lib/controller/controller.dart b/Sources/dafl_project_flutter/lib/controller/controller.dart
index a98b2fc..a0da747 100644
--- a/Sources/dafl_project_flutter/lib/controller/controller.dart
+++ b/Sources/dafl_project_flutter/lib/controller/controller.dart
@@ -1,4 +1,5 @@
 import 'dart:convert';
+import 'package:flutter/cupertino.dart';
 import 'package:http/http.dart' as http;
 import '../persistence/database_loader.dart';
 import '../persistence/database_saver.dart';
@@ -13,6 +14,8 @@ class Controller {
   static Loader loader = DatabaseLoader();
   static final Searcher _searcher = DatabaseSearcher();
 
+  late BuildContext navigatorKey;
+
   late User currentUser;
 
   Controller() {
diff --git a/Sources/dafl_project_flutter/lib/main.dart b/Sources/dafl_project_flutter/lib/main.dart
index 4d751b0..6f6c3fd 100644
--- a/Sources/dafl_project_flutter/lib/main.dart
+++ b/Sources/dafl_project_flutter/lib/main.dart
@@ -468,6 +468,12 @@ Object notify(int index, context, {bool isError = true}) {
           message = "Mot de passe incorrect ! Veuillez réessayer.";
           break;
         }
+      case 5:
+        {
+          message =
+              "Une erreur est survenue lors de la liaison de votre compte. Veuillez réessayer.";
+          break;
+        }
       default:
         message =
             "Une erreur est survenue pendant l'inscription. Veuillez réessayer.";
@@ -544,6 +550,11 @@ Object notify(int index, context, {bool isError = true}) {
           message = "Vous avez changer votre mot de passe avec succès";
           break;
         }
+      case 2:
+        {
+          message = "Vous avez relié votre compte Spotify avec succès";
+          break;
+        }
       default:
         message = "L'opération a bien été éxécutée";
         break;
diff --git a/Sources/dafl_project_flutter/lib/views/pages/sign_up/p_sign_up.dart b/Sources/dafl_project_flutter/lib/views/pages/sign_up/p_sign_up.dart
index c81d824..7672c5d 100644
--- a/Sources/dafl_project_flutter/lib/views/pages/sign_up/p_sign_up.dart
+++ b/Sources/dafl_project_flutter/lib/views/pages/sign_up/p_sign_up.dart
@@ -225,6 +225,7 @@ class _SignUpPageState extends State<SignUpPage> {
                                 ), // background// foreground
                               ),
                               onPressed: () {
+                                MyApp.controller.navigatorKey = context;
                                 MyInAppBrowser();
                               },
                               child: Row(