Remote push notification not working for message and callkit background

Hi,

- User did not get any remote notification when he/she receive the message and my app is in development mode stage. 

- I followed same process for creating certificate https://hub.openrainbow.com/#/documentation/doc/sdk/ios/guides/Push_notifications_setup

- In rainbow portal i uploaded following certificates successfully dev-cert.pem and voip-cert.pem.

- I am using following method for register device token to rainbow. 
         func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data)  {
 ServicesManager.sharedInstance().notificationsManager.didRegisterForRemoteNotifications(withDeviceToken: deviceToken)  }

- will i have to register update PKPushCredentials token to rainbow?

 ServicesManager.sharedInstance()?.notificationsManager.registerForUserNotificationsSettings(completionHandler:  { (success, error)} - in success i m getting true.

-  I am getting normal push notification working from my backend server.

Currently i am using
Xcode - 11
Swift - 4.2
rainbow - 1.65

Thanks,