I installed a new router and now Plex cannot be found on my NAS Synology system

Plex Media Server NAS & Devices
21

No. That’s for the app only. It was necessary to put it out there because DSM doesn’t have a large storage area by default. I needed something persistent which had space so I chose to use the main volume.

To clean this up –

  1. Move all your media to new shared folders.
  2. Delete the Plex share (Control Panel - Shared Folders)
  3. Delete the Plex user (Control Panel - Users)
  4. Uninstall the package.
  5. Restart DSM
  6. open https://app.plex.tv → Settings - Authorized Devices - Server
  7. Again make certain your DiskStation server is removed.
  8. Install Plex on the DiskStation
  9. It will create the shared folder again and the plex user.
  10. Give it a minute to perform first-run initialization
  11. Open http://ip.addr.of.syno:32400/web
  12. Sign in and claim it.
  13. Skip over adding sections for now. Let’s get it initialized. You can create library sections in a moment.

For each media shared folder:

  1. Settings - Control Panel - Shared Folders
  2. EDIT the shared folder containing the media
  3. Permissions tab
  4. Give user plex permission to read it.
  5. Save the changes.

After this is complete, return to Plex.
You can now start creating new Library sections – referencing your new shared folders.

Install the package. It will create a new Plex share and Plex user.

Here is the How-To.