So this is weird, and it may well be just because I'm brand new with this USG--It has been up and running for less than an hour, and it is the first one I've ever configured.
I was in the midst of doing a upgrade to the USG via the Unifi app/web page, and I went ahead and configured the USG portion of the Unifi-AP plugin, and that's not generating any errors. I was also able to log in to the USG via its IP address, but now that the Indigo plugin is configured, I can neither manage it via the Unifi app, nor log in.
Is it maybe just half stuck after the upgrade? Seems like not, because in the middle of typing this other networking things went south, and I tried disabling the USG portion of the indigo plugin, then immediately the Unifi app listed the USG as "Provisioning" instead of "Disconnected."
Any insights?