Plex adding media then randomly removing from Library

[ChuckPa]

Have you confirmed all the permissions for all the files and folders allow reading?

I ask because the behavior you’re seeing happens when permissions are messed up.

Please be mindful to add permissions for PlexMediaServer (DSM 7) or Plex (DSM 6)

Synology FAQ - Questions, Answers, and a few How-To's

FAQ 19: Setting permissions to allow Plex access to media files Before beginning, it’s important to remember one key point; Plex doesn’t have any special privileges on Synology except for being able to access the Video Transcoding acceleration hardware. It cannot read any of your files unless you expressly grant permission. This is a fundamental principle of Linux (which Synology uses for DSM) Because of how Synology grants permission, access to files is broken into two different …