Make sure everything follows Plex’s guidelines. The scanner does get tweaked occasionally, so if your files don’t follow those guidelines, there are no guarantees that naming that worked a few months/years ago will get scanned in the same way. Even if you have the right structure and sXXeYY in the file names, another thing to watch out for is extra subfolders. Plex expects the folder you give it to have individual show folders, so if you e.g. have something like
/data/TV/
HD/
Show1 (year)/
Show2 (year)/
SD/
Show3 (year)/
Show4 (year)/
you would have to add both /data/TV/HD/ and /data/TV/SD/ to Plex, not just /data/TV/.
If you’ve checked all of that (and tried the Plex Dance with the shows) and Plex still isn’t scanning things correctly, posting the full path to a few episodes Plex isn’t recognizing would help troubleshooting.
