Hello, sorry for asking this (I already see like 1000 related post about this).
But I being reading all day, and I´m not able to know what I’m doing wrong.
As you can see, this is the name of the files I’m using:
But in plex I get:
As you can see (below) from TVDB I should get more metadata, what I´m doing wrong?
The name of your Season folder should read either
Season 00 or Specials
Make sure you disable IPv6 in your network configuration.
clear your agent caches
https://support.plex.tv/articles/202967376-clearing-plugin-channel-agent-http-caches/
Were the titles of these specials just now put into TheTVDB or were they already in there for a while?
It may take a while until the proxy has the current data.
Perform the Plex Dance with these episodes.
Plex properly recognizes the episodes (they’re sorted as season 0, episode 6 etc.)…
You could check if it’s actually matched… do you get the proper metadata for any of the regular episodes (seasons 1…)? Considering there’s been a revival you might attempt including the show’s original year in the file name or manually fix the matching.
Names should be ThunderCats (1985) > Season 00 > ThunderCats (1985) S00E06.mkv and so on.
Clearing the cache make the magic work! 
Thanks @OttoKerner
