Something went wrong with installing Plex Media Server on the DS214. There should not be a recycle folder in the Plex shared data folder. Also, the username should be plex, not PLEX.
As the Plex Media Server folder is empty, there is no metadata, play history, etc to save.
I suggest completely removing Plex Media Server from the DS214 and starting over from scratch.
Step One: Read this document regarding running Plex on DSM 6 based NAS: Installation & Setup of Plex Media Server on Synology
Step 2: Completely Uninstall Plex Media Server from the DS214 (FAQ #9)
- Package Center - Remove the Plex package
- Control Panel → Users - Delete user Plex (or PLEX, plex, etc)
- Control Panel → Shared Folders - Delete the Plex shared folder
- Restart the DS214
Step 3: Download the current Plex Media Server package from plex.tv
- Go to https://www.plex.tv/media-server-downloads/
- Choose Synology
- Choose the ARMv7 version for x14 Series.
Step 4: Manually install Plex Media Server on the DS214
Following the steps in the Installation & Setup Guide linked above, perform a manual installation of Plex Media Server with the file you just downloaded from Plex. Do not install the version provided by Synology, as it is approximately two years out of date.
Here is a direct link to the Install Plex Media Server section of the guide.
That should get you up and running. Respond back if you run into any problems with the installation process.
