I am joining the thread—same connectivity issue with my The Three with Google Assistant. It stopped working around the same time as everyone else - once I updated to the latest Google Home app version. I've tried every single reset, reboot, and reinstall troubleshooting method too many times but have yet to succeed. I will submit tickets with Klipsh and Google so the known issue trail documentation gets longer.
I'm glad I found this thread to confirm my hardware did not break (and I am not crazy).