Xfinity Stream not working on Wifi

Why is the Xfinity Stream service not working on a Roku 3910 Stick when I have it connected to a private Wifi (that is on Xfinity Internet service) and not xfinitywifi service?

The wifi that I am using is a private Wifi setup on my Sonicwall using Xfinity Internet.

So I am using Xfinity internet just not using their Hotspot.  No where on their site do they say that you have to use the Xfinitywifi Hotspot.

Trying to get rid of the digital adaptors that I am paying Xfinity for every month and all other Roku services work, such as Netflix and Prime Video, but could not get the Xfinity Stream Beta to work.  It told me that I had to use Xfinity wifi or logout.

Funny, but I can connect from my Ipad to the Xfinity Stream Live using my Private Wifi and no problems.  Why is the Xfinity Stream on roku having such a problem?  Xfinity should be able to see the IP address running the Stream app is coming from an Xfinity Internet connection.