third party app with BES problems

I have a Storm with os 5 connected to a BES 4.1.4.15

Installed an app and it cannot connect back to the app server. When the phone is not activated on the BES the app works fine. I have checked the policies and just the default policy is assigned without and restrictions.

Is any one else having the same problems. If so, how did you solve it.

thanks in advance.