Your Synology server is signed into a different plex.tv account.
(user name ending with -ee)
You need to sign in all your servers into the plex.tv account which has the Plex Pass. (i.e. the one you are using now to access the forums)
Settings - Server - General
Please make sure you did read Plex Media Server security changes for Synology users
Please do also enable ‘debug’ logging on your server
(do not enable ‘verbose’ logging!)
