What is happening?! – Times Tables (Multiplication Tables) Review

I want to study my math more, but when I get to a more hard of a stage, it stops working! For example, 3x4=, I put 12, but it says wrong, 9x3=27! And so I have to turn my IPad off again and again so it could work for a little while. PLEASE FIX IT! I WANT TO PRACTICE IT.
Review by Mine crazy on Times Tables (Multiplication Tables).