Math Problem Solver app funktioniert nicht

Just snap a photo of any math problem, and Math problem solver will provide you with a clear step-by-step solution!  Math problem solver is your best math answer scanner and companion for solving your mathematical problems and equations!  No problem - Math problem solver provides both straight answers and the corresponding step-by-step solutions.  Math problem solver covers levels of math including Arithmetic, Algebras, Trigonometry, Pre-Calculus, Calculus and more.  No worries - Math problem solver recognizes both handwritten problems as well as printed ones.  Math problem solver will save your results in "History" tab so you can go back to them anytime.  Just snap a photo math problem or upload one from your photo gallery.  Need help with your math homeworks or class assignments? Stuck on a hard problem?  Learn math, check homework and study for upcoming tests and ACTs/SATs!  Upgrade to Math problem solver Pro version and get step-by-step solutions with detailed explanations, unlimited access and history. • Payment will be charged to your Apple ID account at the confirmation of purchase. • A subscription automatically renews unless it’s canceled at least 24 hours before the end of the current billing period. • Your account will be charged for renewal within 24 hours prior to the end of the current period. • Manage or cancel your subscription in your account settings on the App Store after purchase. • Offers and pricing subject to change without notice.