I'm having a issue where the built-in Ecobee integration isn't polling the Ecobee data. Currently (Dec 29) the "Last Activity" is stuck at the last time (Dec 24) I've manually "refreshed" the device by clicking on the refresh tile at the device page.
I've tried setting polling to 1, 2, 5 mins but neither works. All 12 Ecobee devices are stuck at Dec 24.
That is very unusual. Are any other schedules running for other apps, even timers in rule? You may be dealing with a database issue. A reboot may help. If not, take a fresh backup, save it locally, then restore that backup on Backup and Restore page (that is the fastest way to run a Soft Reset).