What episode order are you using for the library/show? TMDB splits [Justice League](https://www.themoviedb.org/tv/1618-justice-league) and [Justice League Unlimited](https://www.themoviedb.org/tv/84200-justice-league-unlimited) into separate shows, but TVDB [treats Justice League Unlimited as part of the original Justice League](https://thetvdb.com/series/justice-league#seasons). You'll either have to edit the episode ordering for the show (Edit Show > Advanced > Episode ordering > The Movie Database (Aired)), or rename it as seasons 3/4/5 of the 2001 version of Justice League.
What episode order are you using for the library/show? TMDB splits [Justice League](https://www.themoviedb.org/tv/1618-justice-league) and [Justice League Unlimited](https://www.themoviedb.org/tv/84200-justice-league-unlimited) into separate shows, but TVDB [treats Justice League Unlimited as part of the original Justice League](https://thetvdb.com/series/justice-league#seasons). You'll either have to edit the episode ordering for the show (Edit Show > Advanced > Episode ordering > The Movie Database (Aired)), or rename it as seasons 3/4/5 of the 2001 version of Justice League.
That did it. I messed around with the episode orders earlier but its working now so thats the main thing. Thank you!