Plex Docs → Your Media → Naming & Organizing TV Show Files
Which folder are you adding to the TV show library?
Using the listing above, it must be Anime.
Plex does not support any folders between the one added to the library and the main show folder. Doing so will cause problems such as those you are experiencing.
You must use curly braces, { }, for the TMDB/TVDB ID.
Try:
Note: You may need to Plex Dance the series after renaming/reorganizing. This removes incorrect matching information from the Plex Media Server database.
/Anime <-- folder added to TV show library
.../Vinland Saga (2019) {tvdb-359274} <-- TMDB/TVDB ID options, but helps.
....../Season 01 <-- "Season" in English.
........./Vinland Saga (2019) s01e01.ext <-- ext = mkv/mp4/etc
Add the episode name after sXXeYY if desired.
