While I have to apologize for not being able to provide you with any help for the problem at hand I just wanted to note that if you open up identical public threads via a reddit account and via a lemmy account at the same time then those two accounts are then, for data analysis purposes, connected for all eternity. You might as well not bother using different nicknames.
If that isn’t a concern to you then just ignore my ramblings.
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.