Touch&Retouch funktioniert nicht

This flexibility to define the opacity of different areas of a layer is the basis for more interesting image manipulation techniques such as selective coloring and luminosity masking. - Quick Select: Smart and easy to use, users just need to select part of the object and the edge detection algorithm will find the boundary. - Hair Brush: Smooth and natual looking, paint on the hair/fur of an object and the algorithm will select the hair/fur for you in high quality. - Regular Brush: A regular brush tool with the capability to adjust its size, hardness and opacity.  If you choose to purchase Premium Membership, payment will be charged to your iTunes account, and your account will be charged for renewal within 24-hours prior to the end of the current period.  "Premium Membership Monthly" subscription price is $8. 99 USD/month. Prices are in U. S. dollars, may vary in countries other than the U. S. and are subject to change without notice.  Touch&Retouch provides tools for adding image cutout and layer mask capabilities to your mobile applications & professional photo editor.  "Premium Membership Weekly" subscription price is $2. 99 USD/week.  Image layer mask is a fundamental technique in image manipulations.  It allows you to selectively modify the opacity (transparency) of the layer they belong to.  Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase.  No cancellation of the current subscription is allowed during the active subscription period.  It's an easy & practical photo editing app for expertise & beginners.  If you don’t choose to purchase Premium Membership, you can simply continue using App for free.