Fellow Xbox One owners, some of you may have noticed that there is a new Windows Universal App that Plex has released. However, this app does not run on Xbox One. Might be a good idea to hit up this fellows post https://forums.plex.tv/discussion/232929/so-uwp-app-is-not-really-uwp#latest
and like it so the devs understand Xbox One owners desire to get a modern, speedy app vs the slow one we have now.