UseCrypt Messenger funktioniert nicht

Make secure calls within a group of trusted members with a crystal-clear sound and international calls with no additional cost.  Feel safe with advance end-to-end encryption mixed with a few layers of strongest security available.  Phonebook integration - the app will find contacts using UseCrypt Messenger and use them securely.  App infrastructure is situated in the Europe, which guarantees high speed and high security standards of the service.  Fast, simple and fully secured conversations, whether it is a text, video or voice message (in HD quality).  Rise the level of security by using separated password to the app.  Use self-destructive messages, which will be irrecoverably deleted after the time you choose.  The first messenger app safer than a face-to-face conversation.  From the world-class cryptographers to bring the privacy back.  All you need is an access to the Internet.  Your own presidential line.  Application needs subscription for making calls and sending secure text messages. - Subscription is auto-renewable in monthly periods. - Payment will be charged to iTunes Account at confirmation of purchase.