DragonBox Numbers funktioniert nicht

Your child will develop an intuitive understanding of how larger numbers relate to small numbers, and practice basic math strategies every step of the way.  Give your child the foundation they need for future math learning with DragonBox Numbers.  The app contains 4 different activites for your child to explore, each designed to challenge your child to use the Nooms and basic math in a different way.  In the "Puzzle" section, your child will use basic math to create their own puzzle pieces, and place them in the right spot to reveal a hidden picture.  DragonBox Numbers brings math to life by turning numbers into colorful and relatable characters, called Nooms.  The game makes it easy and fun for your child to gain an intuitive understanding of numbers.  This activity reinforces your child's number sense and trains their ability to quickly recognise and add numbers.  In the "Ladder" section, your child will have to think strategically to build larger numbers.  DragonBox Numbers will teach your child what numbers are, how they work, and what you can do with them.  DragonBox Numbers is based on the same pedagogical principles as the other games in the award-winning DragonBox series, and works by integrating the learning seamlessly into the gameplay, no quizzes or mindless repetitions.  The "Sandbox" section of the game is designed to let your child explore and experiment with the Nooms.  The Nooms can be stacked, sliced, combined, sorted, compared and played with, any way your child pleases.  In the "Run" section, your child will have to direct the Noom down a path using quick mental calculations.  Every move your child makes reinforces number sense.  Your child can use their fingers, Nooms or numerals to jump over obstacles.  Your child will perform thousands of operations while solving the 250 puzzles.