World Taekwondo AR Textbook funktioniert nicht

World Taekwondo AR Textbook is the Official App by World Taekwondo featuring Taegeuk / Poomsaes recorded directly from Taekwondo Masters for used in classes or self learning.  All Taegeuk / Poomsaes are motion recorded straight from instructors and presented in an easy to follow and learn, step by step manner, which are fully adjustable in size and rotatable in 360 degrees.  OFFICIAL TAEGEUK / POOMSAE: All movements recorded straight from professional Taekwondo Masters and are suitable for learning and grading use.  TAKE NOTES IN CLASS: Keep track of specific movements, step by step, and make notations on common mistakes highlighted by your instructor with the ability to slow down or speed up the animations.  LEARN ON THE GO: Through augmented reality, place the virtual Taekwondo demonstrator on any surface to have it demonstrate the art of Taekwondo before you in full detail.  Use it for revision of each sequence, footwork or to show off the beauty of this martial art to your friends and family.  VIDEO YOUR PROGRESS: Have a friend record you performing your routine using our virtual instructor as guide and play it back to see how you compare against it.