Sky messenger on i phone

I have a question on sky messenger that can be downloaded on i phones. I've downloaded it several times connecting myself with my hotmail ID and password.

The problem is that,after I've deleted the applications,several times,from my I phone, when I've downloaded again and made my Id and psw,it diesn't allow me to acced anymore. It says that I have problem of connectivity and to try again. I know,in fact, that the problem is not the Internet connectivity because for other applications it works. Could you tell me if the problem may be caused by the fact that I've downloaded ,the application from appstore, too many times and deleted also to many times? Is there any way to solve this?

Thanks a lot