Infinite Passengers funktioniert nicht

Infinite Passengers adds boarding music, emergencies, airline management, passenger satisfaction and pilot skills to Infinite Flight. -Added boarding music and safety announcements.  The Airline Mode, sound packs, Cargo Mode and emergencies require a monthly subscription to 'Airline Mode'.  Account will be charged for renewal within 24-hours prior to the end of the current period, and identify the cost of the renewal.  As further in app purchase you can have airline specific choices. -Add passengers to your flights.  Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period.  The better you fly the higher your airline rating and the more passengers and income you receive.  Payment will be charged to iTunes Account at confirmation of purchase.  This subscription is available on monthly, 6 monthly or yearly options.  Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase.