[rstuart4133]

> Plex mysteriously began refusing remote connections, so I couldn't share with my friend outside my home LAN.

Same issue for me. The client app used to have a "remote servers" configuration option. You had to manually set up port forwarding and get the configuration perfect, which I suspect was beyond your average Joe. But once you did it was rock solid.

They now have some automagic arrangement based on uPnP which anybody can use, when it works. But it doesn't always work and because they've removed the old manual option when it doesn't work, there is no remote access for you. You would hope they would add some debugging and doco to give you some visibility into what it depends on so you can isolate the problem, but no, they provide nothing.