You rock! The Jellyfin Android TV app on a LineageOS-Pi4 is my current preferred way of bringing Jellyfin to my TV. I tried messing around with Kodi-based solutions for a while but if you don’t like the default behaviors there then it’s an absolute nightmare timesink to reconfigure. AndroidTV Jellyfin client - install, open, everything is in its place already.
PO box or phone number are not an option around my parts, unfortunately, but a simple email alias is a rather obvious solution that I’m embarrassed to not have considered.