A. 1. Go to Settings > Notifications and ensure that the blocked apps are set to 'Allow Notifications' if you want to receive them. 2. Check if 'Do Not Disturb' is enabled, as this can prevent notifications from appearing.

B. 1. Unblock the apps temporarily to see if notifications come through, then decide if you want to keep them unblocked. 2. Consider using a third-party app that can manage notifications more effectively.