Plex on Synology wont allow deletion of libraries

Robert,
Since you’ve done this a few times now, I’d like to offer how I recommend setting up PMS on Synology systems.

Read through and take from it what works for you.

To start over completely,

  1. Plex/web - Settings - Authorized Devices (Upper left) – REMOVE this Syno PMS server . It will be recreated with new ID numbers as you start over

  2. Sign out of your Plex/web account (Upper right). You’ll sign in again during setup.

  3. Stop PMS

  4. Delete user Plex (Control Panel - Userrs)

  5. Delete the Plex share ( Control Panel - Shared Folders )