Not blaming the FW. The latest App has introduced some issues related to notifications, etc. I am on the latest Beta release of the V3’s 188.8.131.52 and have not experienced any problem with the exception of a couple not wanting to connect. Whenever this happens, I perform the aforementioned steps which seems to work. I am thinking that the cache may get corrupted and needs to be cleared during some updates.
I am on a Pixel 5 with Android 11 and have not experienced app crashes on a regular basis as you are. At one point I was even running Android 12 Beta - which was nice. But wanted to remove it when I was not getting notifications from the latest beta app: 2.20.21.
I will keep an eye on it, but whenever I load any new FW to my camera’s, I test first to see how they are doing and then, if needed, perform the cache cleanup. once this has been completed, everything normally works as expected.