Game crash and data lost

Its a great game and I really enjoy playing it. But I want to say it at the beginning, they should tell people that if you reinstall the game you will lose all your data in this game!

I played this game everyday, ground MSP, released POW, and unlocked many units. It is a great great and I couldnt stop playing it. Until this morning, every time when I start a battle, the game crashed by showing a lot of unexpected icons and letters. I restarted the game and my iphone, but the same thing happened. I tried many times to restart it, but fail. Then I try to find where I can backup my data so that I can re-install this game. But I cant find any buttons that can help me backup. So I thought it could be like some others games that stored data in the game center so that I didnt need to worry about it. After I re-install this game, I surprisingly found all my game records were lost and everything started from the very beginning! I was so so frustrated! You know what, even worse, the game crash problem is still there after I lost everything!!

I feel sad and decide to quit this game forever after this and I just dont want this happens to any other players.

Geigei_paw about METAL SLUG DEFENSE