Xfinity stream beta app on lg

I’ve downloaded and activated the Xfinity stream beta app on my new 65” LG. When the app starts it loads directly into the purchases page.. I don’t seem to be able to to access the main menu in any way.

It’s seems the app doesn’t respond to the red pointer/mouse on the LG remote.
You can navigate on that page using the arrows and select button but there seems to be no way at all to get to a main menu.

Any ideas?