Look it up on TheTVDB. The name is correct:
https://www.thetvdb.com/series/the-fourth-estate
The file name is only half the success when it comes to tv shows.
Equally important is the folder structure where the files are situated.
How does this look like on your server?
https://support.plex.tv/articles/200220687-naming-series-season-based-tv-shows/
If this was added initially with different file names, you need to clean out the mismatch from the Plex database by performing the Plex Dance
