diff --git a/lib/bloc/auth_bloc/auth_bloc.dart b/lib/bloc/auth_bloc/auth_bloc.dart
index a36b777ae7..cc7190a890 100644
--- a/lib/bloc/auth_bloc/auth_bloc.dart
+++ b/lib/bloc/auth_bloc/auth_bloc.dart
@@ -100,7 +100,12 @@ class AuthBloc extends Bloc<AuthBlocEvent, AuthBlocState> with TrezorAuthMixin {
     } finally {
       // Explicitly disconnect SSE on sign-out
       _log.info('User signed out, disconnecting SSE...');
-      _kdfSdk.streaming.disconnect();
+      try {
+        _kdfSdk.streaming.disconnect();
+      } on StateError {
+        // SDK has been disposed, skip disconnect
+        _log.info('SDK already disposed, skipping SSE disconnect');
+      }
       
       await _authChangesSubscription?.cancel();
       emit(AuthBlocState.initial());
@@ -467,11 +472,21 @@ class AuthBloc extends Bloc<AuthBlocEvent, AuthBlocState> with TrezorAuthMixin {
       if (user != null) {
         // User authenticated - connect SSE for balance/tx history streaming
         _log.info('User authenticated, connecting SSE for streaming...');
-        _kdfSdk.streaming.connectIfNeeded();
+        try {
+          _kdfSdk.streaming.connectIfNeeded();
+        } on StateError {
+          // SDK has been disposed, skip connect
+          _log.info('SDK already disposed, skipping SSE connect');
+        }
       } else {
         // User signed out - disconnect SSE to clean up resources
         _log.info('User signed out, disconnecting SSE...');
-        _kdfSdk.streaming.disconnect();
+        try {
+          _kdfSdk.streaming.disconnect();
+        } on StateError {
+          // SDK has been disposed, skip disconnect
+          _log.info('SDK already disposed, skipping SSE disconnect');
+        }
       }
     });
   }
diff --git a/lib/shared/utils/extensions/legacy_coin_migration_extensions.dart b/lib/shared/utils/extensions/legacy_coin_migration_extensions.dart
index 1bdf3bac4b..b47afd67b0 100644
--- a/lib/shared/utils/extensions/legacy_coin_migration_extensions.dart
+++ b/lib/shared/utils/extensions/legacy_coin_migration_extensions.dart
@@ -28,8 +28,14 @@ extension LegacyCoinMigrationExtensions on Coin {
   ///
   /// NB: This is not a real-time balance. Prefer using [getBalance] or
   /// [watchBalance] for up-to-date data.
-  double? balance(KomodoDefiSdk sdk) =>
-      sdk.balances.lastKnown(id)?.spendable.toDouble();
+  double? balance(KomodoDefiSdk sdk) {
+    try {
+      return sdk.balances.lastKnown(id)?.spendable.toDouble();
+    } on StateError {
+      // SDK has been disposed, return null
+      return null;
+    }
+  }
 
   /// Gets the current USD balance of this coin
   ///
@@ -45,20 +51,30 @@ extension LegacyCoinMigrationExtensions on Coin {
   }
 
   double? lastKnownUsdBalance(KomodoDefiSdk sdk) {
-    final balance = sdk.balances.lastKnown(id);
-    if (balance == null) return null;
-    if (balance.spendable == Decimal.zero) return 0;
+    try {
+      final balance = sdk.balances.lastKnown(id);
+      if (balance == null) return null;
+      if (balance.spendable == Decimal.zero) return 0;
 
-    final price = sdk.marketData.priceIfKnown(id);
-    if (price == null) return null;
+      final price = sdk.marketData.priceIfKnown(id);
+      if (price == null) return null;
 
-    return (price * balance.spendable).toDouble();
+      return (price * balance.spendable).toDouble();
+    } on StateError {
+      // SDK has been disposed, return null
+      return null;
+    }
   }
 
   double? lastKnownUsdPrice(KomodoDefiSdk sdk) {
-    final price = sdk.marketData.priceIfKnown(id);
-    if (price == null) return null;
-    return price.toDouble();
+    try {
+      final price = sdk.marketData.priceIfKnown(id);
+      if (price == null) return null;
+      return price.toDouble();
+    } on StateError {
+      // SDK has been disposed, return null
+      return null;
+    }
   }
 
   /// Get cached 24hr change from CoinsBloc state
diff --git a/lib/shared/widgets/coin_balance.dart b/lib/shared/widgets/coin_balance.dart
index baa0952374..07dc027800 100644
--- a/lib/shared/widgets/coin_balance.dart
+++ b/lib/shared/widgets/coin_balance.dart
@@ -17,8 +17,7 @@ class CoinBalance extends StatelessWidget {
     final baseFont = Theme.of(context).textTheme.bodySmall;
     final balanceStyle = baseFont?.copyWith(fontWeight: FontWeight.w500);
 
-    final balance =
-        context.sdk.balances.lastKnown(coin.id)?.spendable.toDouble() ?? 0.0;
+    final balance = coin.balance(context.sdk) ?? 0.0;
 
     final children = [
       Row(
diff --git a/lib/shared/widgets/coin_fiat_balance.dart b/lib/shared/widgets/coin_fiat_balance.dart
index 6a966fdedb..06f39a51d3 100644
--- a/lib/shared/widgets/coin_fiat_balance.dart
+++ b/lib/shared/widgets/coin_fiat_balance.dart
@@ -21,7 +21,13 @@ class CoinFiatBalance extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final balanceStream = context.sdk.balances.watchBalance(coin.id);
+    Stream<BalanceInfo>? balanceStream;
+    try {
+      balanceStream = context.sdk.balances.watchBalance(coin.id);
+    } on StateError {
+      // SDK has been disposed, return empty widget
+      return const SizedBox();
+    }
 
     final TextStyle mergedStyle = const TextStyle(
       fontSize: 12,