Android FCM custom SendbirdPushHandler not receiving message when app is closed

I followed the instructions here link. When app is on the background, my custom SendbirdPushHandler can receive the fcm message and working fine but when I fully close the app, it somehow cannot receive the message. The log says it receives the RemoveMessage but was not passed to my custom pushHandler. What seems to be the prob?

Thanks in advance

hello Kevin,

Could you please confirm if you are initialising sendbird and registering the SendBirdPushHandler in the Application class’s onCreate() method and not in an Activity?