My PC and my TV are in the same local network and plex was not trying to change me until the last week. I don't even have any subnets. Also I don't want to troubleshoot this issue, Jellyfin just works for me and I like using the open source projects.
Plex sucks. Couple of days ago they started to ask for $2 per month to access my files from my tv. I switched to jellyfin and everything works great. Sorry for the rant.
I've been watching Cannes Lions Awards for years, they show creative ads and most of them are hilarious.