CSN Mid Atlantic app with NBCSN app

Recently CSN Mid Atlantic announce live streaming of,Washington Capitals games. The CSN app is located within the NBCSN app. While the NBCSN app works fine when I sign in using Cox, when I try to live,stream the Caps,games I get "Authentication Error contact your service provider". What,gives? I tried deleting the NBCSN app and reinstalling and still get the same problem. Problem exists on all iPhones and iPads.