Well, it appears that SmartThings is out as a test platform. No native support for it yet there. You can use custom handlers, but I cannot get it to pair there either, though I am not entirely confident I am doing the pairing process properly. It looks like you just have to press the action button once (or twice quickly for secure add) and it should pair. But all mine does is flash green for a couple seconds which the instructions says is the indication of an unsuccessful pairing, but it never seems to make any attempt to pair.
I will have to try again later, I need sleep. Another 11 hr shift tonight, ugggg.