[User 224999]

I only got it to work by using manual lookup and ignoring the active filter warning. When the keyboard dialog pops up, it is only displaying the first word of the title, so I type in the rest. I guess I'm not understanding how the filters work. The folders are named like the title of the movie or tv show, though there are episode titles for the actual episode recordings in the folder.

EDIT: It looks like artwork will appear inside movie folders (since the file and the folder are named the same), but not episode folders (folder is TV Show title, but file may be named "S01E01 - Pilot" for example). All this is only possible with manual lookup.

Please give me an exact example of one of your grouped recordings, so the title of the grouped folder AND one of the titles of the underlying episodes.
Also notice that your naming convention is most probably causing the issue. You named it "S01E01 Pilot", there should be an tvshow title in the filename becaus ethat's what's used for lookups.
A lookup for S01E01 will return exactly nothing.