Using Ecobee integration and device, the thermostat went offline (again) this morning, making the device uncontrollable from the dashboard. Usually this means a fresh login is needed. However this time using 1 Factor Authorization, the password was refused perhaps 3 or 4 times, although I was able to log into Ecobee.com with identical credentials. Finally accepted the login and reauthorized the device.
This occurs perhaps every 3 or 4 months. Kindly look into this.