I recently bought a Pixel 5 and flashed GrapheneOS on it to test a de-Googled OS. I haven’t received any notifications since installing the Wyze app. I have all notifications turned on for each device and the app and also system notifications, although it’s missing some options. Initially I was using the latest beta app then left beta to try the standard version.
I only know this because I made some modifications to my VPN App that was blocking Google Services Framework and other Google system apps. I was getting no push notifications. When I unblocked them, the notifications resumed.