Yes, fixing it is fairly easy. Im going to bet your naming schema does not follow the plex format. See Naming and Organizing Your TV Show Files | Plex Support
My standard response to that is:
If you want to save yourself a lot of time I would recommend using Download - tinyMediaManager and use ${title} (${year}) {imdb-${imdb}} as the new name format.
Once thats done do a Plex Dance.
