Don't show user id no device is found

lib/views/main_view.dart

@@ -162,7 +162,9 @@ class _MainViewState extends State<MainView> {
                 ),
                 const SizedBox(height: 4),
                 Text(
-                  'ID: ${userInfo.id}',
+                  _devices.isNotEmpty
+                      ? 'DMR ID: ${_devices.first.id}'
+                      : 'No devices',
                   style: Theme.of(context).textTheme.bodyMedium?.copyWith(
                         color: Theme.of(context)
                             .colorScheme