Personal Media and Beyond You’re going to be hearing a lot from us this year—we’ve got a ton of exciting...
We are also changing how remote playback works for streaming personal media (that is, playback when not on the same local network as the server). The reality is that we need more resources to continue putting forth the best personal media experience, and as a result, we will no longer offer remote playback as a free feature. This—alongside the new Plex Pass pricing—will help provide those resources. This change will apply to the future release of our new Plex experience for mobile and other platforms.
i'm not sure why it would do this, i've never had any issues with watching plex while the internet is down (in fact that was one of my original uses for it, to have movies and tv in a building without internet). I don't have it turned on but I do know you can go into server settings -> network and set a list of IPs/subnets that can access without any authorization at all. That lets you use plex without even having a plex account afaik.
oh okay, interesting. well, you could always use the web browser on your phone/ipad i guess. not a great experience but i know for a fact that plex works on ios in chrome at the very least.
Depending on setup this can be true with Jellyfin, too. I have a domain registered, use dynamic DNS, and have Traefik direct a subdomain to my Jellyfin server. My mobile clients are configured using that. My local clients use the local static IP.
If my internet goes down, my mobile clients can’t connect, even on the LAN.