When I log into SmartThings on my phone (Android) it tells me my hub is offline and all my switches and sensors are offline but my Samsung Soundbar, TV, and camera are all good. I even get video from the camera. It also tells me my thermostats are connected.
I was wondering if this might be related to the recent email I got from SmartThings see below. And if there is some way to down grade.
SmartThings Hub 2018 (v3) Zigbee Update
We are halting the rollout of the Zigbee update pending further review of customer feedback. Please contact us via support.smartthings.com if you have any questions.