Just as a test:
on the agent configuration page, disable the OFDB agent completely.
Disable Fanart.tv also
Then let ‘Local Media Assets’ and ‘Cinematerial’ swap their places.
Clear the local caches of the agents
https://support.plex.tv/articles/202967376-clearing-plugin-channel-agent-http-caches/
(if you can’t find the folders on your QNAP, take a look into the QNAP FAQ Qnap faq.....read me first! )
After doing all of the above, Refresh Metadata once more.
