THANK YOU!! It's not obvious at all that the area around the box 12 items can scroll. What a design FAIL!!! Hopefully this feedback can make it to their UX designers. I was already uneasy about being forced to use the "desktop" version this year (I usually use the online version, but didn't realize that wouldn't be an option when I bought the physical copy at Costco). I was really dreading having to type everything in manually, but figured I'd google the issue before I subjected myself to that. Luckily your post saved me, but I think I'll be sticking with the online version next year...
