Go into your tv show library properties. https://support.plex.tv/hc/en-us/articles/200289266-Editing-Libraries
Which path is set under the ‘Add Folders’ tab?
If it is only Multimedia/TV Shows, then this won’t work.
You must add in there each of your ‘index letter’ sunfolders individually
e.g. Multimedia/TV Shows/R - Z
It helps to add the release year of s01e01 in parentheses to the show folder name, in this case Multimedia/TV Shows/R - Z/The X-Files (1993)
Afterwards, perform the Plex Dance to clear out any mismatches from the Plex database.
