can't connect to server

Okay, since I have been a cord cutter for over 3 years, and fire core and apple have provided these great tools to do so more efficiently, I bought another appleTV4, that makes 3. So set up my streaming channels, loved in to my appleID, but low and behold, when I try to connect to my NAS AKA server, it tells me “an error has occurred, okay” NO other indication on what I can do. I have restarted the appleTV4, I have ddeleted infuse and reinstalled it. And I know the user name and password is correct. Any suggestions please!