Screen Defender funktioniert nicht

Should you choose to upgrade to a Premium Membership, payment will be charged to your iTunes account at confirmation of purchase. Your subscription is $9. 99 per week or $149. 99 per year gives access to your for all features in application.  The upgrade to Premium gives you access to personalized 4K wallpapers, access for using wallpapers as your wallpaper on your phone and turns the advertisements off.  Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable.  Your subscription renews automatically unless cancelled at least 24 hours prior to the end of the current period.  Cancellation of the current active subscription period is not allowed.  Auto-renewal may be turned off in your Account Settings in iTunes after purchase.  The download and usage of Screen Defender is free of charge.  Screen Defender offers to you personalized design of your screen.  Make boost to your phone.  You can also manage your subscriptions in Account Settings after purchase.