Lost all progress, cant restore purchase

My daughter has loved this game for such a long time, and has had so much fun with it that she was excited when I said there was an update adding new content. However, after the update, ALL of her progress is completely gone, and I cant restore the $20 purchase I made to unlock all of the content. I thought there was a problem with my apple account, but after reading the other reviews, I see that this is a widespread problem and that we arent the only ones! Please fix this so that we can restore our purchases!

Boxzes about Mickey's Magical Math World, v1.2