Whatsapp and Messenger no longer download messages until I open app

[Android Central Question]

HELP WHAT SETTINGS HAVE I STUFFED UP. Both Whatsapp and Messenger no longer download messages until I open application. Hence I am missing calls and messages. I want to receive notification immediately.

 

[Dano1200r]

Have you opened Settings, Notifications? What does it show?

 

[AssAssinP5]

Double check the notification settings, there will be something not configured