Background Eraser funktioniert nicht

The editor function will let you add filters, change white balance, modify the exposure, add crop options, change saturation levels and add vignettes. • Monthly Subscription Price: 3 Day Free Trial then $8. • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period. • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable Background Eraser adds the great features above and are available through an auto-renewing subscription.  Your subscription will automatically renew unless cancelled at least 24 hours before the end of your current subscription, and you can cancel a subscription during the active period.  With this app you can remove the background of any picture, save the transparent image and add a different background of your choosing.  Subscriptions will be charged to your credit card through your iTunes account.  You will no longer need Photoshop, you can use the images you saved and use them for presentations, logos, postcards and more!  Do you want to make your pictures more exiting?  You can manage your subscription at any time, either by viewing your account in iTunes from your Mac or PC, or Account Settings on your device after purchase.