Tried restoring to previous backups before Google stopped working, still getting the same error. Also updated to OS 3.3.0 and still can't fix it, I'm still seeing 121 as the latest update for OS 3.3.0. When I remove the Google Assistant driver, the customer portal still has all of the devices under voice command, if I recall correctly, without driver, the devices shouldn't show up?
One thing I noticed also was in the customer portal, the When/Then page is not working, it give an error that the session is expired and to log in and out again. Despite re-logging in, the expired session still occurs.