Cover Art Not Displaying
I have a folder on Plex that contains exercise videos. When I display that folder using the Plex Media Server App running on my Synology through my computer's web browser, cover art (that I have attached manually) displays correctly for each video. When I view that folder using the Plex App on Roku, none of the videos display cover artwork. Most of my other folders (e.g. Movies, TV Shows, Music Videos) display artwork correctly on the Roku, but at least one other folder acts like the exercise folder.
The Plex server on my Synology is Version 0.9.15.6, and it shows a Web Version of 2.5.6. My Roku App is Version 4.0 Build 9.
What's going on, and what can I do to fix it?