Updated on 2026-08-14

app/src/main/java/com/tangem/tap/MainActivity.kt

@@ -175,7 +175,7 @@ class MainActivity : AppCompatActivity(), SnackbarHandler, ActivityResultCallbac
     override fun onDestroy() {
         store.dispatch(NavigationAction.ActivityDestroyed(WeakReference(this)))
         intentProcessor.removeAll()
-        cardSdkLifecycleObserver.onDestroy()
+        cardSdkLifecycleObserver.onDestroy(this)
         super.onDestroy()
     }
 

app/src/main/java/com/tangem/tap/features/customtoken/impl/presentation/viewmodels/AddCustomTokenViewModel.kt

@@ -12,6 +12,7 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import com.tangem.blockchain.common.Blockchain
 import com.tangem.blockchain.common.Token
+import com.tangem.blockchain.common.derivation.DerivationStyle
 import com.tangem.core.analytics.api.AnalyticsEventHandler
 import com.tangem.crypto.hdWallet.DerivationPath
 import com.tangem.crypto.hdWallet.HDWalletError
@@ -212,13 +213,21 @@ internal class AddCustomTokenViewModel @Inject constructor(
             return listOf(defaultNetwork) + Blockchain.values()
                 .filter { blockchain ->
                     scanResponse?.card?.supportedBlockchains(scanResponse.cardTypesResolver)
-                        ?.contains(blockchain) == true &&
-                        blockchain.derivationPath(derivationStyle)?.rawPath?.isNotEmpty() == true
+                        ?.contains(blockchain) == true && isDerivationPathNotEmpty(derivationStyle, blockchain)
                 }
                 .sortedBy(Blockchain::fullName)
                 .map(::createNetworkSelectorItem)
         }
 
+        private fun isDerivationPathNotEmpty(derivationStyle: DerivationStyle?, blockchain: Blockchain): Boolean {
+            // derivationStyle is null for cards without HD wallets, always return true
+            return if (derivationStyle != null) {
+                blockchain.derivationPath(derivationStyle)?.rawPath?.isNotEmpty() == true
+            } else {
+                true
+            }
+        }
+
         private fun createTokenNameInputField(): AddCustomTokenInputField.TokenName {
             return AddCustomTokenInputField.TokenName(
                 value = "",
@@ -288,7 +297,12 @@ internal class AddCustomTokenViewModel @Inject constructor(
                 }
                 .sortedBy(Blockchain::fullName)
                 .mapNotNull {
-                    val derivationPath = it.derivationPath(derivationStyle)?.rawPath
+                    val derivationPath = if (derivationStyle != null) {
+                        it.derivationPath(derivationStyle)?.rawPath
+                    } else {
+                        // derivationStyle is null for cards without HDWallet, use DerivationStyle.V1
+                        it.derivationPath(DerivationStyle.V1)?.rawPath
+                    }
                     if (derivationPath?.isNotEmpty() == true) {
                         createDerivationPathSelectorAdditionalItem(
                             blockchain = it,
@@ -628,6 +642,7 @@ internal class AddCustomTokenViewModel @Inject constructor(
         if (blockchain == null) return null
 
         val derivationStyle = reduxStateHolder.scanResponse?.derivationStyleProvider?.getDerivationStyle()
+            ?: DerivationStyle.V1
 
         val derivationNetwork = if (blockchain == Blockchain.Unknown) {
             uiState.form.networkSelectorField.selectedItem.blockchain

app/src/main/res/values/styles.xml

@@ -49,8 +49,8 @@
         <item name="cornerRadius">14dp</item>
         <item name="android:textAllCaps">false</item>
         <item name="android:textSize">14sp</item>
-        <item name="android:fontFamily">@font/roboto_regular</item>
-        <item name="android:letterSpacing">0</item>
+        <item name="android:fontFamily">@font/roboto_medium</item>
+        <item name="android:letterSpacing">0.01</item>
         <item name="fontWeight">500</item>
         <item name="lineHeight">16sp</item>
         <item name="iconPadding">4dp</item>

data/card/src/main/java/com/tangem/data/card/sdk/CardSdkLifecycleObserver.kt

@@ -12,6 +12,6 @@ interface CardSdkLifecycleObserver {
     /** Callback of creating activity [context]  */
     fun onCreate(context: Context)
 
-    /** Callback of destroying activity */
-    fun onDestroy()
+    /** Callback of destroying activity [context] */
+    fun onDestroy(context: Context)
 }

data/card/src/main/java/com/tangem/data/card/sdk/DefaultCardSdkProvider.kt

@@ -7,6 +7,7 @@ import com.tangem.common.CardFilter
 import com.tangem.common.card.FirmwareVersion
 import com.tangem.common.core.Config
 import com.tangem.sdk.extensions.initWithBiometrics
+import java.lang.ref.WeakReference
 import javax.inject.Inject
 import javax.inject.Singleton
 
@@ -23,14 +24,22 @@ internal class DefaultCardSdkProvider @Inject constructor() : CardSdkProvider, C
 
     private var _sdk: TangemSdk? = null
 
+    /** Weak reference of context that uses to create [TangemSdk] */
+    private var contextRef: WeakReference<Context> = WeakReference(null)
+
     override fun onCreate(context: Context) {
-        if (_sdk == null) {
-            _sdk = TangemSdk.initWithBiometrics(activity = context as FragmentActivity, config = config)
-        }
+        contextRef = WeakReference(context)
+        _sdk = TangemSdk.initWithBiometrics(activity = context as FragmentActivity, config = config)
     }
 
-    override fun onDestroy() {
-        _sdk = null
+    override fun onDestroy(context: Context) {
+        /*
+
+
+         */
+        if (contextRef.get() == context) {
+            _sdk = null
+        }
     }
 
     private companion object {