Ring app push notifications not working on iOS

Hello Ring Team, Since 10 days ago, suddenly both my iPhone and iPad are not receiving any push or email notifications from Ring app. I tried couple of times reinstalling the app, re-enable the notifications but still no luck. Both devices are running iOS 13.5.1 ( latest release at the moment), I would appreciate if you can double check if there is any problem with the APN push server as the notifications stopped working in the same time for the both devices.