diff --git a/app/src/main/java/org/bepass/oblivion/service/OblivionVpnService.java b/app/src/main/java/org/bepass/oblivion/service/OblivionVpnService.java
index c3461715..8598b77b 100644
--- a/app/src/main/java/org/bepass/oblivion/service/OblivionVpnService.java
+++ b/app/src/main/java/org/bepass/oblivion/service/OblivionVpnService.java
@@ -86,7 +86,7 @@ public void run() {
         }
     };
     // For JNI Calling in a new threa
-    private static final Executor executorService = Executors.newSingleThreadExecutor();
+    private static final ExecutorService executorService = Executors.newFixedThreadPool(1);
     // For PingHTTPTestConnection to don't busy-waiting
     private static ScheduledExecutorService scheduler;
     private Notification notification;
@@ -258,8 +258,6 @@ private void performConnectionTest(String bindAddress, ConnectionStateChangeList
             return;
         }
 
-        scheduler = Executors.newScheduledThreadPool(1);
-
         final long startTime = System.currentTimeMillis();
         final long timeout = 60 * 1000; // 1 minute
 
@@ -267,20 +265,19 @@ private void performConnectionTest(String bindAddress, ConnectionStateChangeList
             if (System.currentTimeMillis() - startTime >= timeout) {
                 changeListener.onChange(ConnectionState.DISCONNECTED);
                 stopForegroundService();
-                scheduler.shutdown();
+                scheduler.shutdown(); // Shutdown scheduler after test completion
                 return;
             }
 
             boolean result = pingOverHTTP(bindAddress);
             if (result) {
                 changeListener.onChange(ConnectionState.CONNECTED);
-                scheduler.shutdown();
+                scheduler.shutdown(); // Shutdown scheduler after successful connection
             }
         };
 
-
-        // Schedule the ping task to run with a fixed delay of 1 second
-        scheduler.scheduleWithFixedDelay(pingTask, 0, 1, TimeUnit.SECONDS);
+        // Schedule the ping task to run with a fixed delay of 5 seconds using shared scheduler
+        scheduler.scheduleWithFixedDelay(pingTask, 0, 5, TimeUnit.SECONDS);
     }
 
     private void stopForegroundService() {
@@ -347,6 +344,7 @@ private void start() {
         }
 
         executorService.execute(() -> {
+            FileManager.initialize(this);
             bindAddress = getBindAddress();
             Log.i(TAG, "Configuring VPN service");
             try {
@@ -396,12 +394,18 @@ public int onStartCommand(Intent intent, int flags, int startId) {
     public void onCreate() {
         super.onCreate();
         handler.post(logRunnable);
+        if (scheduler == null) {
+            scheduler = Executors.newScheduledThreadPool(1);
+        }
     }
 
     @Override
     public void onDestroy() {
         super.onDestroy();
         handler.removeCallbacks(logRunnable);
+        if (scheduler != null && !scheduler.isShutdown()) {
+            scheduler.shutdown();
+        }
         if (wLock != null && wLock.isHeld()) {
             wLock.release();
             wLock = null;
@@ -424,7 +428,7 @@ public void onRevoke() {
         } else {
             Log.w(TAG, "No wake lock to release");
         }
-
+        FileManager.initialize(this);
         // Close the VPN interface
         try {
             if (!FileManager.getBoolean("USERSETTING_proxymode")) {
diff --git a/app/src/main/java/org/bepass/oblivion/utils/LocaleHandler.java b/app/src/main/java/org/bepass/oblivion/utils/LocaleHandler.java
index 2a38946c..3ad667fd 100644
--- a/app/src/main/java/org/bepass/oblivion/utils/LocaleHandler.java
+++ b/app/src/main/java/org/bepass/oblivion/utils/LocaleHandler.java
@@ -2,6 +2,7 @@
 
 import android.app.AlertDialog;
 import android.content.Context;
+import android.content.res.Resources;
 import android.util.Log;
 
 import androidx.appcompat.app.AppCompatDelegate;
@@ -12,7 +13,6 @@
 import org.bepass.oblivion.R;
 
 import java.util.Locale;
-import java.util.Objects;
 
 public class LocaleHandler {
     private final Context context;
@@ -24,14 +24,15 @@ public class LocaleHandler {
     public LocaleHandler(Context context) {
         this.context = context;
 
-        // Safely load configured locales
         LocaleListCompat locales;
         try {
+            // Attempt to get configured locales
             locales = LocaleConfigXKt.getConfiguredLocales(context);
             if (locales.isEmpty()) {
-                throw new Exception("Locale configuration is empty or null.");
+                throw new Resources.NotFoundException("No locales found");
             }
         } catch (Exception e) {
+            // Log error and fall back to default locale
             Log.e("LocaleHandler", "Failed to load locale configuration. Falling back to default locale.", e);
             locales = LocaleListCompat.create(Locale.forLanguageTag(DEFAULT_LOCALE));
         }
@@ -41,7 +42,8 @@ public LocaleHandler(Context context) {
 
     public void setPersianAsDefaultLocaleIfNeeds() {
         if (!FileManager.getBoolean(IS_SET_DEFAULT_LOCALE)) {
-            AppCompatDelegate.setApplicationLocales(LocaleListCompat.create(configuredLocales.getFirstMatch(new String[] { DEFAULT_LOCALE })));
+            Locale persianLocale = Locale.forLanguageTag(DEFAULT_LOCALE);
+            AppCompatDelegate.setApplicationLocales(LocaleListCompat.create(persianLocale));
             FileManager.set(IS_SET_DEFAULT_LOCALE, true);
         }
     }
@@ -60,8 +62,9 @@ public void showLanguageSelectionDialog() {
     private String[] getAvailableLanguagesNames() {
         String[] languageNames = new String[configuredLocales.size()];
         for (int index = 0; index < configuredLocales.size(); index++) {
-            languageNames[index] = Objects.requireNonNull(configuredLocales.get(index)).getDisplayName();
+            Locale locale = configuredLocales.get(index);
+            languageNames[index] = locale != null ? locale.getDisplayName() : "Unknown";
         }
         return languageNames;
     }
-}
+}
\ No newline at end of file