Future Messages funktioniert nicht

Futurme, a tool that allows you to send messages to your future self.  You can send yourself messages, only you from the future will be able to read them.  Subscribe to Pro Plan for all access to additional features. - Payment will be charged to your iTunes Account at confirmation of purchase. - Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. - Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of your chosen package. - You can manage your subscription on your iTune Account Settings. - Any unused portion of a free trial will be forfeited if you purchase a subscription.