I had this problem as well. Their latest version, well, it sucks. You can't select user profiles and if you accidentally press either Z button it freezes. My guess is that it freezes because the Z buttons are supposed to let you switch between profiles, but profiles are broken.
I went down to 3.5.0 though and that fixed it. The profiles appear in the top right and I can select which one to produce backups for.or I can cycle between them with the left and right Z buttons (which is where L2 and R2 would be on any other console)
It, however, has another problem: I cannot see ALL titles played in 3.5.0 so we really need to wait for them to fix it.