Arcam rDAC see my NAS


I know that I should be able to do this, but...
My Bluesound Node2 died.  I picked up an Arcam rDAC to replace it.  I can’t get the Arcam to see my Synology  NAS.  Arcam uses the Play Fi app.  There isn’t any area in the app to enter the credentials of the NAS.  I tried the FAQ in PlayFi and tried to contact PlayFi, which is owned by DTS, but the DTS and PlayFi sites don’t work.  I’ve emailed Arcam but was hoping someone here could help.
mahler123
Post removed 
Thank you for the helpful reply.  Unfortunately I still don’t know how to enable the DLNA after following your link.  Part of the problem is that the menu tab is bare bones, but even if I am able to navigated down to Media Server settings I still can’t figure out what to do
Post removed