Please don’t think the problem is solved. You may have “patched” it but it’s not fixed.
The only path you should have is D:\PlayOn This is your ROOT path. Plex will scan anything in it and will match series from there.
EDIT: On a side note. Can you imagine the sheer number of “seasons” you will have to add to plex. That would be insane!! Adding hundreds or even thousands of season 01. season 02, etc, etc…
