Hmm... I hadn't thought of that. Thanks, -G-. I may have shot myself in the foot: I use macchanger on the AX200-based TP-Link Archer TX3000E I upgraded my aging DIY PC with last year. Doing so might explain some of the off-line unidentifiable MAC add...
I've just read through this entire thread shortly after discovering that I am no longer allowed to adjust WiFi channel selection etc as per the now greyed-out' parameters cited in many of this thread's posts. TheMythOfSanity's reference to a Rogers "...