I recently moved to a new home and thus moved my smarthings (V2) hub as well. I was just trying to add a Zigbee light bulb and the hub cannot find it for some reason. I noticed that when I set the hub to search for new devices that the green light does not flash. In my old home it would flash when searching for new devices. Any thoughts on this?
Probably not the answer but did you adjust the geolocation?
Tried both Add Device > by brand and scan nearby? Have the Edge driver installed?