Sketch Tree Pro funktioniert nicht

Full-featured painting tools, with over 80 exquisite brushes, erasers, smearing tools, ruler, cutter, filling and roller auxiliary tools, color picker, and an advanced layers system that can import background images and sketching, black ink, color painting, color separation, sharpen layer processings.  Adjustment for brush size and transparency, unlimited undo and redo, continuous automatic saving, simple and easy to use interface, even beginners can quickly get started.  And you can share your works on social networks.   Whereas painting is not only drawing, it also powerfully to edit image.  Its painting and drawing function is very groundbreaking, with realistic brushes and breakthrough watercolors.  Sketch Tree is a mobile drawing application created specifically for creative professionals.  GPU hardware acceleration, you can create beautiful sketches, fascinating pictures and wonderful illustrations anywhere and anytime.  The canvas can be enlarged 64 times with a high-precision grid display, and the artwork is accurate to the pixel level.  It can bring life photographs with artistic.  When you understand it thoroughly, you couldn't part with it.  It will become more and more powerful, as it is still progress.   If you find any questions or suggestions, please feedback us by email astusking@outlook. com.   Art life, creativity, leaving beauty at around, recording moments, depicting the future.