Google Nest Community

I have 6 nest protects in my house, all purchased in November. 3 of which have suddenly decided they will no longer connect to the network. I have tried the solutions in https://support.google.com/googlenest/answer/9234146None of these options worked...

I recently bought a Nest Learning thermostat 3rd Gen. There has been multiple occasions where i'll be home and the thermostat goes into away mode because it thinks no one is there. I have tried multiple combinations of settings in the "What decides i...