Notifications Issue on Android - Video DoorBell 2

I have had a Video Doorbell 2 since November 2019 and it's brilliant. However in the last couple of weeks I have found that I do not get notifications to my Android phone for Rings or Motion. The settings are activated in the App but I get nothing on my phone. If I turn the notification settings in the app off and back on I then get notifications for the day but the follwoing day they stop unless I turn the notifications off and on again. This is anew issue, I did not have this when I first set up the device. It is recording motion and rings as I can access footage in the app or via my account on line. I am using a Hauwei P30 Pro. I have had no updates on the phone and I have tried to find a solution without success. Was hoping I may get some help via the community please. Thanks