Blur Photo Background funktioniert nicht

Subscription to BlurBackground Pro automatically renew, unless auto-renew is turned off at least 24 - hours before the end of the current payment period. - Payment will be charged to iTunes Account at confirmation of purchase. - Account will be charged for renewal within 24-hours prior to the end of the current period. - No cancellation of the current subscription is allowed during active subscription period. - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. - Any unused portion of a free trial period will be forfeited when the user purchases a subscription.  Subscription can be cancelled during its free trial period via the subscription setting through your iTunes account.  Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase.  A subscription removes the BlurBackground watermark and offers an ad-free experience. - Pro monthly subscription (paid monthly) for $2. - Pro yearly subscription (paid yearly) for $11.  This must be done 24 hours before the end of the subscription period to avoid being charged.  BlurBackground is completely free to use, but you can unlock even more with a BlurBackground Pro subscription!  Blur Background helps to blur the background of any picture of yours with just few taps.  If you have any issues or suggestions please let me know by tapping the setting button on the BlurBackground main screen.