diff --git a/lib/components/matrix.dart b/lib/components/matrix.dart
index 15d49ffb..d8863859 100644
--- a/lib/components/matrix.dart
+++ b/lib/components/matrix.dart
@@ -380,8 +380,9 @@ class MatrixState extends State<Matrix> {
           wallpaper = file;
         }
       });
-      store.getItem(SettingKeys.fontSizeFactor).then((value) => AppConfig
-          .fontSizeFactor = double.tryParse(value) ?? AppConfig.fontSizeFactor);
+      store.getItem(SettingKeys.fontSizeFactor).then((value) =>
+          AppConfig.fontSizeFactor =
+              double.tryParse(value ?? '') ?? AppConfig.fontSizeFactor);
       store
           .getItemBool(SettingKeys.renderHtml, AppConfig.renderHtml)
           .then((value) => AppConfig.renderHtml = value);
diff --git a/lib/l10n/intl_en.arb b/lib/l10n/intl_en.arb
index 0232c4f5..633d7f58 100644
--- a/lib/l10n/intl_en.arb
+++ b/lib/l10n/intl_en.arb
@@ -18,6 +18,22 @@
       "username": {}
     }
   },
+  "badServerVersionsException": "The homeserver supports the Spec versions:\n{serverVersions}\nBut this app supports only {supportedVersions}",
+  "@badServerVersionsException": {
+    "type": "text",
+    "placeholders": {
+      "serverVersions": {},
+      "supportedVersions": {}
+    }
+  },
+  "badServerLoginTypesException": "The homeserver supports the login types:\n{serverVersions}\nBut this app supports only:\n{supportedVersions}",
+  "@badServerLoginTypesException": {
+    "type": "text",
+    "placeholders": {
+      "serverVersions": {},
+      "supportedVersions": {}
+    }
+  },
   "account": "Account",
   "@account": {
     "type": "text",
diff --git a/lib/utils/localized_exception_extension.dart b/lib/utils/localized_exception_extension.dart
index f57fe132..74cb04e2 100644
--- a/lib/utils/localized_exception_extension.dart
+++ b/lib/utils/localized_exception_extension.dart
@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:famedlysdk/famedlysdk.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_gen/gen_l10n/l10n.dart';
@@ -14,7 +16,35 @@ extension LocalizedExceptionExtension on Object {
           return (this as MatrixException).errorMessage;
       }
     }
-    if (this is MatrixConnectionException) {
+    if (this is BadServerVersionsException) {
+      final serverVersions = (this as BadServerVersionsException)
+          .serverVersions
+          .toString()
+          .replaceAll('{', '"')
+          .replaceAll('}', '"');
+      final supportedVersions = (this as BadServerVersionsException)
+          .supportedVersions
+          .toString()
+          .replaceAll('{', '"')
+          .replaceAll('}', '"');
+      return L10n.of(context)
+          .badServerVersionsException(serverVersions, supportedVersions);
+    }
+    if (this is BadServerLoginTypesException) {
+      final serverVersions = (this as BadServerLoginTypesException)
+          .serverLoginTypes
+          .toString()
+          .replaceAll('{', '"')
+          .replaceAll('}', '"');
+      final supportedVersions = (this as BadServerLoginTypesException)
+          .supportedLoginTypes
+          .toString()
+          .replaceAll('{', '"')
+          .replaceAll('}', '"');
+      return L10n.of(context)
+          .badServerLoginTypesException(serverVersions, supportedVersions);
+    }
+    if (this is MatrixConnectionException || this is SocketException) {
       L10n.of(context).noConnectionToTheServer;
     }
     Logs().w('Something went wrong: ', this);
diff --git a/lib/views/homeserver_picker.dart b/lib/views/homeserver_picker.dart
index 0571e786..5b46c277 100644
--- a/lib/views/homeserver_picker.dart
+++ b/lib/views/homeserver_picker.dart
@@ -6,6 +6,7 @@ import 'package:famedlysdk/famedlysdk.dart';
 import 'package:fluffychat/components/default_app_bar_search_field.dart';
 import 'package:fluffychat/components/matrix.dart';
 import 'package:fluffychat/app_config.dart';
+import 'package:fluffychat/config/setting_keys.dart';
 import 'package:fluffychat/utils/platform_infos.dart';
 import 'package:flushbar/flushbar_helper.dart';
 import 'package:flutter/foundation.dart';
@@ -78,7 +79,23 @@ class _HomeserverPickerState extends State<HomeserverPicker> {
       }
 
       setState(() => _isLoading = true);
-      await Matrix.of(context).client.checkHomeserver(homeserver);
+      final wellKnown =
+          await Matrix.of(context).client.checkHomeserver(homeserver);
+
+      var jitsi = wellKnown?.content
+          ?.tryGet<Map<String, dynamic>>('im.vector.riot.jitsi')
+          ?.tryGet<String>('preferredDomain');
+      if (jitsi != null) {
+        if (!jitsi.endsWith('/')) {
+          jitsi += '/';
+        }
+        Logs().v('Found custom jitsi instance $jitsi');
+        await Matrix.of(context)
+            .store
+            .setItem(SettingKeys.jitsiInstance, jitsi);
+        AppConfig.jitsiInstance = jitsi;
+      }
+
       final loginTypes = await Matrix.of(context).client.requestLoginTypes();
       if (loginTypes.flows
           .any((flow) => flow.type == AuthenticationTypes.password)) {
@@ -92,9 +109,6 @@ class _HomeserverPickerState extends State<HomeserverPicker> {
         await launch(
             '${Matrix.of(context).client.homeserver?.toString()}/_matrix/client/r0/login/sso/redirect?redirectUrl=$redirectUrl');
       }
-    } on String catch (e) {
-      // ignore: unawaited_futures
-      FlushbarHelper.createError(message: e).show(context);
     } catch (e) {
       // ignore: unawaited_futures
       FlushbarHelper.createError(
diff --git a/pubspec.lock b/pubspec.lock
index 727b7aa8..e229eff4 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -223,7 +223,7 @@ packages:
     description:
       path: "."
       ref: main
-      resolved-ref: "9faf07e31ae825147c2b295517f04233e9342e25"
+      resolved-ref: fc8563849a4706ecef7c37fdd7d4fbb93757ec9b
       url: "https://gitlab.com/famedly/famedlysdk.git"
     source: git
     version: "0.0.1"