Don't feel alone. I had absolutely no sucess with pairing a Hue Motion sensor and even the custom drivers didn't help. Seems like it works for a few people, but most can't get them to work properly on HE. @mike.maxwell can't get his to work either and he writes the HE drivers! They're fine on the Hue Bridge. Mine is now permanently on the Hue Bridge. Not going to waste anymore time on it personally. They're not that great anyway.
A lot of better motion sensors out there. My favorites are Xiaomi because they're small and inexpensive. Work great when you add some inexpensive IKEA Trådfri outlets as repeaters to keep them stable.
