Haypi application freezes on iphone

Hi,

I was playing the game and the application crashed. I closed the app and since then the application will not open. It comes up with the Haypi logo (on the white page) and then the app closes. It doesn't even come on the log in screen. I deleted the app and re-downloaded from the app store but I still have the same problem.

Any idea of what causes that? I would appreciate any help.


Thanks!