Google home hub integration (camera is not available message)

I have very odd problem with Google home hub. I have 6 wyze cams. To use with Google home hub, I need to unlink and link back wyze home service in Google home app every month. If not, google home hub always says whatever camera I asked to see on the Google home hub it says the camera is not available. I was beta tester just in case it has any connection to this problem. It is not app or router problem as advised by wyze tech support since it works right after I unlink and relink wyze to google home no matter what app version I use or my router is rebooted or not.
It is very annoying. Please help.