For some reason Plex has started incorrectly sorting episodes of many of my shows by cramming every episode across all seasons into season one. For example, I have Rick and Morty organized into files using the "Rick and Morty - xxx - format, where season one episodes are 101-110, season 2 episodes are 201-210, and so on. But all of the episodes are being sorted into season one, and none are being given titles or descriptions anymore. Season 2 episode 1, for example, is being sorted as “Season 1 • E201.”
According to the support docs, Plex needs the season/episode numbers in the format “sXXeXX.” So the full path would look like this: /TV Shows/ShowName/Season 02/ShowName – s02e17 – Optional_Info.ext
Well I’ve been using that episode format for more than a decade now with no problems. So, unless they recently changed the requirements I wouldn’t think so.