Synology NAS setup...anyone free to help me?

If I may comment here??

DO NOT PUT MEDIA IN PlexMediaServer !!!

The warnings are written in SIX languages.

That is for the app’s use. It is only visible so you can make backups of PMS.

If you’re having a permissions problem when using your own shared folders,

Please read this How-To

Placing media in the PlexMediaServer shared folder is as DANGEROUS as putting media in the Plex shared folder under DSM 6.

If you make a mistake, you’ll lock up PMS and be forced to erase it all and start over.