DLNA on PMS on Synology NAS



Hi all, I have a Synology NAS DS916+ and use PMS on it with my Mac Mini and Windows laptop. I would like to begin using DLNA and have it setup but I can only see the NAS and major folders ie Music, Photo, and Video in UPnP. Even when I drop down all folders it does not show any of my Plex libraries or files. Is there something I have missed to configure also seeing the Plex libraries?

I have enabled DLNA in PMS.
I have list of ip in PMS to cover all in my network.

Is there anything else? any ideas or information is greatly appreciated.