So I could not search for TV shows in Seren, Nightwing or The Oath. I know that Trakt being down may be affecting Seren’s search capability, but I do not think it should affect Nightwing or The Oath, because I believe those two do not rely on Trakt for finding TV shows. So I believe there is something wonky going on with the TVDB api again. My work around is to use TMDBHelper to search TV shows and set the default TV show player to The Oath or Nightwing (Oath seems to work better). This way, TMDB is used instead of TVDB for the search. Of course, TMDB is not as complete as TVDB, but it is a good workaround until things get back to normal.
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