Cause it don't work – 2012 Zombies vs Aliens Review

Can you fix crashes in the game zombies vs aliens 2012 for both the free and the now $6.00 version I loved the game when I was a kid and just today saw the game again so I bought the paid version I knew how much I loved the game so I didn't really care if it was the same thing as the free version. However I discovered that I can't upgrade anything without the game freezing when I went back and read the reviews I saw I wasn't the only one. please fix this because I think this game should get a lot more attention that it does.
Review by Isackagueia on 2012 Zombies vs Aliens.