diff --git a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/models/SupportBlockchainType.kt b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/models/SupportBlockchainType.kt
new file mode 100644
index 0000000000..27215046bd
--- /dev/null
+++ b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/models/SupportBlockchainType.kt
@@ -0,0 +1,6 @@
+package com.tangem.tap.features.customtoken.impl.presentation.models
+
+internal enum class SupportBlockchainType {
+
+    SUPPORTED, UNSUPPORTED, UNABLE_TO_DETERMINE
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/CustomTokenRouter.kt b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/CustomTokenRouter.kt
index 4444aeea64..1c016c4993 100644
--- a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/CustomTokenRouter.kt
+++ b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/CustomTokenRouter.kt
@@ -20,4 +20,6 @@ internal interface CustomTokenRouter {
      * @param blockchain blockchain to show alert
      */
     fun openUnsupportedNetworkAlert(blockchain: Blockchain)
+
+    fun showGenericErrorAlertAndPopBack()
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/DefaultCustomTokenRouter.kt b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/DefaultCustomTokenRouter.kt
index af1ebb8795..6391cc840f 100644
--- a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/DefaultCustomTokenRouter.kt
+++ b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/routers/DefaultCustomTokenRouter.kt
@@ -27,4 +27,13 @@ internal class DefaultCustomTokenRouter : CustomTokenRouter {
         )
         store.dispatchDialogShow(alert)
     }
+
+    override fun showGenericErrorAlertAndPopBack() {
+        val alert = AppDialog.SimpleOkDialogRes(
+            headerId = R.string.common_error,
+            messageId = R.string.common_unknown_error,
+            onOk = { store.dispatch(NavigationAction.PopBackTo()) },
+        )
+        store.dispatchDialogShow(alert)
+    }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/viewmodels/AddCustomTokenViewModel.kt b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/viewmodels/AddCustomTokenViewModel.kt
index b15a5fdee5..9fdc0581da 100644
--- a/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/viewmodels/AddCustomTokenViewModel.kt
+++ b/app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/viewmodels/AddCustomTokenViewModel.kt
@@ -697,14 +697,19 @@ internal class AddCustomTokenViewModel @Inject constructor(
         return derivationNetwork.derivationPath(derivationStyle)
     }
 
-    private fun isUnsupportedBlockchain(blockchain: Blockchain): Boolean {
+    private fun getSupportBlockchainType(blockchain: Blockchain): SupportBlockchainType {
         return getSelectedWalletSyncUseCase().fold(
-            ifLeft = { false },
+            ifLeft = { SupportBlockchainType.UNABLE_TO_DETERMINE },
             ifRight = {
-                !it.scanResponse.card.canHandleBlockchain(
+                val canHandleBlockchain = it.scanResponse.card.canHandleBlockchain(
                     blockchain = blockchain,
                     cardTypesResolver = it.scanResponse.cardTypesResolver,
                 )
+                if (canHandleBlockchain) {
+                    SupportBlockchainType.SUPPORTED
+                } else {
+                    SupportBlockchainType.UNSUPPORTED
+                }
             },
         )
     }
@@ -824,9 +829,18 @@ internal class AddCustomTokenViewModel @Inject constructor(
         fun onAddCustomTokenClick() {
             if (!isNetworkSelected()) return
             val blockchain = uiState.form.networkSelectorField.selectedItem.blockchain
-            if (isUnsupportedBlockchain(blockchain)) {
-                featureRouter.openUnsupportedNetworkAlert(blockchain)
-                return
+            when (getSupportBlockchainType(blockchain)) {
+                SupportBlockchainType.SUPPORTED -> {
+                    /* no-op */
+                }
+                SupportBlockchainType.UNSUPPORTED -> {
+                    featureRouter.openUnsupportedNetworkAlert(blockchain)
+                    return
+                }
+                SupportBlockchainType.UNABLE_TO_DETERMINE -> {
+                    featureRouter.showGenericErrorAlertAndPopBack()
+                    return
+                }
             }
 
             val currency = when (getCustomTokenType()) {
diff --git a/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/DefaultTokensListRouter.kt b/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/DefaultTokensListRouter.kt
index 15f39a8914..27418f3d01 100644
--- a/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/DefaultTokensListRouter.kt
+++ b/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/DefaultTokensListRouter.kt
@@ -50,6 +50,15 @@ internal class DefaultTokensListRouter : TokensListRouter {
         store.dispatchDialogShow(alert)
     }
 
+    override fun showGenericErrorAlertAndPopBack() {
+        val alert = AppDialog.SimpleOkDialogRes(
+            headerId = R.string.common_error,
+            messageId = R.string.common_unknown_error,
+            onOk = { store.dispatch(NavigationAction.PopBackTo()) },
+        )
+        store.dispatchDialogShow(alert)
+    }
+
     override fun openNetworkTokensNotSupportAlert(networkName: String) {
         store.dispatchDialogShow(
             AppDialog.SimpleOkDialogRes(
diff --git a/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/TokensListRouter.kt b/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/TokensListRouter.kt
index 8347f59a2e..34b5379b48 100644
--- a/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/TokensListRouter.kt
+++ b/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/router/TokensListRouter.kt
@@ -36,6 +36,8 @@ internal interface TokensListRouter {
      */
     fun openUnsupportedNetworkAlert(blockchain: Blockchain)
 
+    fun showGenericErrorAlertAndPopBack()
+
     /**
      * Open alert with unsupported networks tokens error
      */
diff --git a/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/viewmodels/TokensListViewModel.kt b/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/viewmodels/TokensListViewModel.kt
index 2464c82a17..0fa1976240 100644
--- a/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/viewmodels/TokensListViewModel.kt
+++ b/app/src/main/java/com/tangem/tap/features/tokens/impl/presentation/viewmodels/TokensListViewModel.kt
@@ -29,6 +29,7 @@ import com.tangem.domain.wallets.usecase.GetSelectedWalletSyncUseCase
 import com.tangem.tap.common.extensions.dispatchWithMain
 import com.tangem.tap.common.extensions.fullNameWithoutTestnet
 import com.tangem.tap.common.extensions.getNetworkName
+import com.tangem.tap.features.customtoken.impl.presentation.models.SupportBlockchainType
 import com.tangem.tap.features.tokens.impl.domain.TokensListInteractor
 import com.tangem.tap.features.tokens.impl.domain.models.Token
 import com.tangem.tap.features.tokens.impl.domain.models.Token.Network
@@ -380,12 +381,18 @@ internal class TokensListViewModel @Inject constructor(
                     toggledNetwork.changeToggleState()
                 }
             } else {
-                if (isUnsupportedBlockchain(blockchain)) {
-                    router.openUnsupportedNetworkAlert(blockchain)
-                } else {
-                    analyticsSender.sendWhenBlockchainAdded(blockchain)
-                    changedBlockchainList.add(blockchain)
-                    toggledNetwork.changeToggleState()
+                when (getSupportBlockchainType(blockchain)) {
+                    SupportBlockchainType.SUPPORTED -> {
+                        analyticsSender.sendWhenBlockchainAdded(blockchain)
+                        changedBlockchainList.add(blockchain)
+                        toggledNetwork.changeToggleState()
+                    }
+                    SupportBlockchainType.UNSUPPORTED -> {
+                        router.openUnsupportedNetworkAlert(blockchain)
+                    }
+                    SupportBlockchainType.UNABLE_TO_DETERMINE -> {
+                        router.showGenericErrorAlertAndPopBack()
+                    }
                 }
             }
         }
@@ -469,14 +476,19 @@ internal class TokensListViewModel @Inject constructor(
         )
     }
 
-    private fun isUnsupportedBlockchain(blockchain: Blockchain): Boolean {
+    private fun getSupportBlockchainType(blockchain: Blockchain): SupportBlockchainType {
         return getSelectedWalletSyncUseCase().fold(
-            ifLeft = { false },
+            ifLeft = { SupportBlockchainType.UNABLE_TO_DETERMINE },
             ifRight = {
-                !it.scanResponse.card.canHandleBlockchain(
+                val canHandleBlockchain = it.scanResponse.card.canHandleBlockchain(
                     blockchain = blockchain,
                     cardTypesResolver = it.scanResponse.cardTypesResolver,
                 )
+                if (canHandleBlockchain) {
+                    SupportBlockchainType.SUPPORTED
+                } else {
+                    SupportBlockchainType.UNSUPPORTED
+                }
             },
         )
     }