Libraries don't automatically update when adding new content

[trumpy81]

Hmmm … that is odd then.

I see some folders are watched but the majority of them are not, returning permission denied.

It is probably the iNotify table being full. See this link and adjust your iNotify table as needed.

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

FAQ 16: Increase the number of folders Plex can monitor Applicable to all supported versions of DSM. When the Linux ‘inotify’ table fills up, this will cause when Plex to stop automatically detecting new media you add to the server. It will also manifest when there are transcoder problems with Dolby audio codecs. Linux has a default table size which is static. We can increase this at will. On some versions it’s 8192. On newer kernels, the default is 65536 folders. This is easy to incr…