Facebook App Notifications For Messenger. Even though facebook suffered significant drops in the number of active users, facebook messenger is still holding up. Click your photo in the top left. No special or extended permission is required.
Try clearing cache data from the facebook app and messenger app. Tap on facebook and make sure notifications aren’t blocked.
Made for big screens and close connections.
If turning off messenger notifications through the app isn’t working for you, you could go straight to the root of the app and disable notifications from there. The trick is going to be to find message requests on messenger that are causing the facebook app icon to continue to show an unread message. If you already have a facebook page or an app you can skip the respective steps. Messenger notifies you whenever you receive a new message or when someone adds you.