diff --git a/android/app/src/main/AndroidManifest.xml b/android/app/src/main/AndroidManifest.xml
index 3a6adeb..6b55cb6 100644
--- a/android/app/src/main/AndroidManifest.xml
+++ b/android/app/src/main/AndroidManifest.xml
@@ -1,4 +1,9 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <!-- Netzwerk: Flutter injiziert INTERNET nur in Debug-/Profile-Builds.
+         Ohne diesen Eintrag hat das Release-APK keinerlei Netzzugriff
+         (kein Navidrome-Login, kein Log-Upload). -->
+    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
diff --git a/lib/services/logger_service.dart b/lib/services/logger_service.dart
index 7d85ff9..b634d8f 100644
--- a/lib/services/logger_service.dart
+++ b/lib/services/logger_service.dart
@@ -34,7 +34,7 @@ class LogEntry {
 /// Centralized Logging Service mit Auto-Upload zu Server
 class LoggerService extends ChangeNotifier {
   static const String _logServerUrl = 'https://logs.baka-net.de/api/logs';
-  static const int _batchSize = 20;
+  static const int _batchSize = 5;
 
   final List<LogEntry> _logs = [];
   late final String _deviceModel;
diff --git a/lib/settings/settings_screen.dart b/lib/settings/settings_screen.dart
index 912fc1f..c41a503 100644
--- a/lib/settings/settings_screen.dart
+++ b/lib/settings/settings_screen.dart
@@ -5,6 +5,7 @@ import '../library/database.dart';
 import '../library/permissions.dart';
 import '../library/playlist_service.dart';
 import '../services/cache_manager.dart';
+import '../services/logger_service.dart';
 import '../services/navidrome_service.dart';
 import '../services/offline_mode.dart';
 import 'library_stats.dart';
@@ -261,16 +262,24 @@ class _SettingsScreenState extends State<SettingsScreen> {
                   ? null
                   : () async {
                       setDialogState(() => verbindet = true);
+                      logger.info(
+                          'Login-Versuch: url=${urlCtrl.text} user=$selectedUser '
+                          'pwLeer=${passCtrl.text.isEmpty}');
                       _navidrome.setCredentials(
                           urlCtrl.text, selectedUser, passCtrl.text);
                       final ok = await _navidrome.ping();
                       setDialogState(() => verbindet = false);
                       if (ok && ctx.mounted) {
+                        logger.info(
+                            'Login erfolgreich: url=${urlCtrl.text} user=$selectedUser');
                         await _navidrome.speichereZugangsdaten(
                             urlCtrl.text, selectedUser, passCtrl.text);
                         if (ctx.mounted) Navigator.pop(ctx);
                         if (mounted) setState(() {});
                       } else if (ctx.mounted) {
+                        logger.error(
+                            'Login fehlgeschlagen: url=${urlCtrl.text} '
+                            'user=$selectedUser pwLeer=${passCtrl.text.isEmpty}');
                         setDialogState(() =>
                             fehler = '❌ Login fehlgeschlagen');
                       }