Fair enough. You could be right.
Having done 50+ pairings at this point, granted with a limited set of devices, I have seen pairing fail many times. Often I just retry 3-4 times and it then magically pairs - but not always.
@bcopeland may have other suggestions. As quiet as all the Hubitat employees are this week, though, I assume their are off on some beginning of year strategy session/planning - so response may be delayed. 
