Fix the game

So I bought the game. And I was excited because I was being able to play the aliens. NOPE!!! Every time I try to buy a zombie, the game freezes, if I click on ANYTHING, it freezes. Fix it because I love this game but I spent $5 on it and feel it should play a little more.

Dissiponted about 2012 Zombies vs Aliens Warfare, v2.0