Sketchbook funktioniert nicht

Any unused portion of a free trial period will be forfeited when the user purchases a diese App Premium Features subscription.  The subscriptions are $4. 99 per week with 3 days trial period and $19. 99 yearly or equal to the same price tier as Apple App Store Matrix, determined as the equivalent of subscription price in $USD.  Beautiful tools make beautiful drawings, we endlessly refined diese App brushes to create the most realistic drawing tools.  This must be done 24 hours before the end of the free trial or subscription period to avoid being charged.  Whether you want to create a graffiti or you want to create a doodle, or you want to learn to paint and draw, diese App is your tool of choice.  Unlimited access to all the premium features and future updates during the subscription period.  The subscription will automatically renew unless auto-renew is turned off at least 24 hours before the end of the current period.  No cancellation of the current subscription is allowed during the active subscription period.  Use diese App state-of-the-art brushes and tools to sketch, type, paint, and draw.  This exhaustive artist's toolbox helps users create dazzling sketches, cheerful paintings and smashing illustrations on the go.  You may cancel a subscription or free-trial anytime via the subscription setting through your iTunes account.  diese App is the most realistic, versatile and user-friendly sketching app designed for a mobile device.  Create amazing drawing ideas to life.  Take your drawing creations to wherever your thoughts want to go!  An intuitive way to produce a custom drawing!