Hello @Lukepapa!
Thank you for posting in the community. I apologize for the inconvenience you're experiencing with your Nest Thermostat going offline. Let me help.
Before we troubleshoot, I'll need to confirm a few details.
- Which type of thermostat do you have?
- Has your thermostat ever connected to your network?
- Are you controlling your thermostat from the Nest or Google Home app or the thermostat display?
- Are other non-Nest devices in the home offline?
- Has there been any recent change in the home Wi-Fi network?
Once I have this information, we can determine the best steps to resolve the issue together.
Regards,
Catheryn.
