I am trying to add a new library but the option to select to folders has disappeared. It has also disappeared for my existing libraries when I try to edit them
I am using a WD my could home for my media & accessing plex through the web app
Yes and no. You can create libraries in the Plex Media Server. However, you cannot specify a custom location for the content. Instead, libraries will automatically point to the corresponding subfolder inside the Files area. So, place your television content inside the Shared TV Shows subfolder, music inside the Shared Music subfolder, etc.
Do you maybe have a separate Plex Media Server setup on your pc/notebook? According to my knowledge the WD MyCloud is the only server with that kind of a restriction.
How is that working out for you? I’ve found the transfer speeds to my WD My Cloud Home from my PC are abysmal, so running Plex on my PC with the drive as a source doesn’t sound like it would be any better.
If you do want to set up different “libraries” on My Cloud Home using only the pre-set libraries you could try using the sharing labels. I’ve set the same up for my son. I have all of my TV shows in the TV show library and all of my movies in the Movie library. The ones appropriate for my son I’ve tagged with “Child” and set his managed user up to only see those.