My What's App will not vibrate or make sound on incoming messages

[Daytripper100]

All other apps work fine and I have triple checked that the notification settings are turned on for sound/vibrate.

 

[Tartarus]

All other apps work fine and I have triple checked that the notification settings are turned on for sound/vibrate.

Delete the app, restart your iPhone and download WhatsApp again.
This should in theory fix it for you.