Here's the fix for the scroll not working:
Remove the refrigerator magnet from the underside of the flex mechanism that is meant to stow the micro USB receiver when not in use.
I removed the one from mine and it works like a champ. It's a little slow to react when you move between screens but then it does everything you dreamed it would.
There are two tiny torx screws under the sticker in the battery compartment. Once those are removed you can work your way in and get the magnet out. Pry it out as it has adhesive on the back and stick it on your fridge where it belongs. Good strong magnet the will hold up some fine art work from my 4 year old.