google cloud messaging - can't receive message gcm android below lollipop -

i'm not able receive gcm messages on devices running android below lollipop. push messages works on android 5, 6 , 7. don't know why ... there app code:

manifest:

<uses-sdk android:minsdkversion="19" android:targetsdkversion="25"/> <uses-permission android:name="android.permission.wake_lock" /> <uses-permission android:name="android.permission.internet" />  <permission android:name="sbntt.android.xenoss.permission.c2d_message"     android:protectionlevel="signature" /> <uses-permission android:name="sbntt.android.xenoss.permission.c2d_message" />  <application     android:name="android.support.multidex.multidexapplication"     android:allowbackup="true"     android:icon="@mipmap/ic_launcher"     android:label="@string/app_name"     android:supportsrtl="true"     android:theme="@style/apptheme">      <receiver         android:name="com.google.android.gms.gcm.gcmreceiver"         android:exported="true"         android:permission="com.google.android.c2dm.permission.send" >         <intent-filter>             <action android:name="com.google.android.c2dm.intent.receive" />             <action android:name="com.google.android.c2dm.intent.registration" />             <category android:name="sbntt.android.xenoss" />         </intent-filter>     </receiver>     <service         android:name="sbntt.android.xenoss.gcmpushreceiverservice"         android:exported="false" >         <intent-filter>             <action android:name="com.google.android.c2dm.intent.receive" />         </intent-filter>     </service>     <service         android:name=".gcmregistrationintentservice"         android:exported="false">         <intent-filter>             <action android:name="com.google.android.gms.iid.instanceid" />         </intent-filter>     </service>     <service         android:name=".gcmtokenrefreshlistenerservice"         android:exported="false">     </service>  </application> 

gcmpushreceiverservice class

@override public void onmessagereceived(string from, bundle data) {     string message = data.getstring("message");     if (settings.preference != null) {         if (settings.preference.getboolean("notifications", true)) {             sendnotification(message);         }     } else {         sendnotification(message);     } }   private void sendnotification(string message) {     intent intent = new intent(this, mainactivity.class);     intent.addflags(intent.flag_activity_clear_top);     int requestcode = 0;     pendingintent pendingintent = pendingintent.getactivity(this, requestcode, intent, pendingintent.flag_one_shot);     uri sound = ringtonemanager.getdefaulturi(ringtonemanager.type_notification);     notificationcompat.builder nobuilder = new notificationcompat.builder(this)             .setsmallicon(r.drawable.ic_menu_youtube)             .setcontenttitle("title")             .setcontenttext(message)             .setautocancel(true)             .setcontentintent(pendingintent)             .setsound(sound)             .setdefaults(notification.default_all)             .setpriority(notification.priority_high);      notificationmanager notificationmanager = (notificationmanager)getsystemservice(context.notification_service);     notificationmanager.notify(0, nobuilder.build()); } 

registration works fine! help.

gcm need updated play service on devices . can notify users update play service or use less play service version in project .