Left menu on my Xfinity Stream app

How do I get my left menu, with my guide favorites, back on Xfinity stream.  I have a brand new Samsung smart tv. When I first downloaded the app, I was able to find everything the same way I am on my other televisions. It appears an update occurred, which changed the layout of the home screen and now I cannot find the left menu, which includes my favorite channels. How do I get it back.