If you have the "Thermostat API Unreachable" notification enabled, Flair will send a notification if Flair cannot communicate with your integrated smart thermostat.
Why does a smart thermostat go offline?
A smart thermostat will go offline if it experiences server connectivity issues that prevent communication with 3rd party applications, like Flair. Check with your smart thermostat support to see if they are experiencing any issues that affect communication with 3rd party applications.
Check your smart thermostat app to verify that linking with Flair is still enabled.
If your smart thermostat is not experiencing connectivity issues, try re-integrating your thermostat.
Re-Integrate a Smart Thermostat
If you have a smart thermostat integrated with Flair, follow these steps in this article to remove and re-integrate the thermostat with Flair:
Re-Ingegrate an existing smart thermostat
See also Notifications.