I was accessing it from the LAN. I think I did no more than remove the adapter and reboot, which worked as usual. I do have DDNS disabled by renaming the file. At this point I can not honestly be sure if I was on an Ethernet cable or wireless.
I had to rebuild the device, and have not reinstalled the device, but am interested in doing so. See this post
This takes me back to my desire to have 2 distinct radios in these units. The whole connection reliability is a concern. I spend too much time fiddling with connections. Running the radio on both sides at a minimum costs 30-50% off the performance. The USB radio is slow compared to the internal radio, but more reliable (in my HooToo TM-02).
I notice there is a entry under (LuCi) System => Startup called SSID that is Disabled. I do not know what this is or for. I did not consciously disable it.