Google Nest Community

So I have 3 Nest thermostats and one vest doorbell. All of the sudden one thermostat - the closest to my router - gets the w5 wifi error. other units and the doorbell are just fine. Restarted the unit - no change. Reset the router - no change. Reset ...

So my Nest Doorbell is recently out of warranty and now peeling. Very unsightly. It’s as if the unit had a plastic sticker that I did not remove. Customer service said they could not help me. How is this possible? It appears many have the same proble...