Why does it display upside down??! – ShapeBuilder Preschool Puzzles Review

I bought this app a while ago, and like it very much for my nearly 3 year old, but I just noticed today that the app displays upside down. I think this "upside down" effect is due to an update. Developers, please fix this "bug"! Also, there is no way to get to the home page once the puzzle has started. Please fix! Thanks!
Review by DSB007 on ShapeBuilder Preschool Puzzles.