This just started happening on my existing ROKU TV as well. When I follow the above instructions and check the "Add Channels" box, I can click and it is then checked. If I back out the the left, it is still checked. If I the back out to the left (or up or down) the menu moves as appropriate. But when I come back, the selections are again unchecked. I can no longer get the "Add Channels" shortcut on my home screen. It does no appear to be saving my selection. (I have another ROKU TV that works just fine)