Xioami - cannot bind Aqara motion detector to gateway


I have just received a load of Xiaomi kit from my favour reseller - BangGood :slight_smile:

All the devices paired to the gateway and appeared in OpenHAB with ease. The exception is the motion detectors. I have 2 of them and neither will bind. I use the 3-click-gateway method as well as through the app. Nudda.

Is there something special about it I am missing?
OH2.2 and the latest binding for it.