I have two Ubiquiti Unifi AP AC Pro devices in my offices, cleverly labeled “North” and “South.”
The correct MAC address for North is 78:8A:20:89:xx:xx but it is showing up in inSSIDer as 78:8A:20:8B:xx:xx (all other letters/digits match).
The correct MAC address for South is 78:8A:20:89:yy:yy but is showing up in inSSIDer as 78:8A:20:8A:yy:yy.
I have confirmed that the MAC addresses of the devices reported by the UniFi Controller matches what’s printed on the box (and I presume on the device, but I don’t feel like climbing a ladder right now to verify!).