THAT is an important point ![]()
It implies that the Plex Media Server on your Shield can indeed not see the folder (otherwise you should be able to select it and even navigate into its subfolders).
I’ve found a similar topic from some time ago where the following instruction fixed this. However this refers to a connected network drive!! Can you double check if the same options/actions exist for the USB devices as well?
Yes – a tv show library will only scan for tv shows (requiring folders to be structured properly and files named according to the Plex naming convention)