I’ve had one of the ‘GE Smart Motion Sensors’ (https://byjasco.com/products/ge-z-wave-smart-motion-sensor) in use for a couple years. Works great. The other day I notice it isn’t working so I pull it down and check the batteries. Once was totally dead, curiously the other still showed 3v+. So I replaced both batteries. It showed back up for just a second, then nothing. So I ran the exclude on it, then factory reset it. Here is where it gets interesting. When I go to rejoin it, the LEDs on the sensor do the include confirmation sequence, but the smartthings app never finds it. And then I can go and exclude it again, and smartthings confirms it excluded it, and the sensor does the confirmation LED sequence for exclusion. So I figure, bad sensor. Well I happen to have a brand new identical one in the box and…SAME THING! HELP! The sensor thinks it’s been added, but smartthings just never shows it!
P.S. I have pulled the batteries/power from the hub and power cycled it, and restarted my phone. Didn’t help.