Trakt Scrobbling incorrect show with similar name

There are also other posts on the Trakt forums with the same issue.

Nobody at Plex has even heard of Trakt. So I really wouldn’t hold your breath for a resolution at this end.
(Put another way that’s your fault for using Trakt.)
Hopefully it’s something the Trakt dev may be able to fix but right now he is pretty busy with porting Trakt from tvdb to tmdb I think.

I’m assuming you have upgraded to the new tv scanner agent?
Rolling back and refreshing metadata fixes it.