Ok, the latest firmware turned on Thread support in the V3 hub and one user reported they had to change the Zigbee channel to be able to add new devices after that. Might be worth a try.
Some background: I have a v3 hub with a mix of Z-Wave and ZigBee devices. The ZigBee are mostly Sengled and OSRAM/Sylvania bulbs, and a generic motion sensor as well. My hub did the recent firmware update that enabled the Thread system. I was reading in another forum a comment about this that said we could check in the app that Thread was present and see info about it on our hubs. In my app, on my hub, I saw no such info even though my hub was showing the correct firmware. So, I rebooted the hub, and then in the app I could see the Thread info as reported. However, from then on my ZigBee devices (the bulbs) started behaving weird. The motion sensor went offline and I could not get it back on. My ZigBee bulbs were randomly turning on and I couldn’t turn them off from the app nor via…
