Hi. I have an Ecobee with a few remote sensors. When I load the Ecobee app, they are working fine. I’ve also replaced all their batteries recently. However when I go into SmartThings, they always show offline:
Been a few years. I didn’t do anything special to install them; I just set them up on the Ecobee interface then let all the other things autodetect them.
Sounds like there may be an issue with the SmartThings ↔ Ecobee connection. I’ve been having intermittent connectivity issues with my Ecobee as well. SmartThings was unable to make changes or see current status most of the day yesterday.