Xumo app on x1 is not working for favorites

Using the Xumo app on my x1 box is not working.  I have a network setup as a favorite and when I access i, it times out without bringing up the network content to watch on demand.  If I use the app on my iPhone/tablet is works as it should.  I contacted Xumo directly and they said it had to be Xfinity that corrected this issue as it is an app on their box.

I went to Xfinity store and they said to replace the box, which they did and the issue was not corrected.