Below is a list of things to help determine why notifications are not coming through on your apps:

1. Check the notification settings on the app and mobile device.
2. Note the type of app – some come with in-built limiters on notifications.
3. Look into Do Not Disturb settings on the mobile device.
4. Try switching off any battery optimization on apps, as this may be blocking them.
5. Restore the device to factory settings to clear any cached information.