Amazing Coin (USD) Learning funktioniert nicht

There is a pattern, but one coin is missing, please complete the pattern with the coins provided. 4 most frequently used coins PENNY, NICKEL, DIME, QUARTER will be showed and played by the default setting, and you can turn on two coins as HALF DOLLAR and DOLLAR to teach kids about 50 cents and 100 cents in Setting button.  Best Coin Learning & Money Counting Games for Kids! 1. 270,000+ EDU Purchased by Schools around the US! 2. 9 interactive games about USD coins learning, counting, paying, making change, matching and etc. 3.  Amazing Coin is a fun and educational game for kids to practice identifying and solving math problems with coins.  It will teach your kids how to recognize, count, add, pay and make change with coins.  "I do like the integration of half dollar and dollar coins because my daughter is learning those coins as well in Kindergarden at the school she attends".  You want to buy a food and you have paid some coins, how much money will you get back in change.  At same time, you can customize the 9 games and obverse/reverse coins by Setting button.  There is a group of coins in the right order, but some are missing, please complete the sequence with the coins provided.  You want to buy a food, how much coins should you pay?  A quarter rewards for each correct answer, with the rewards kids can buy food in the store, and eat them later. 4.  There is an equation; Please fill in how much there is in all with the coins provided.  There are 2-5 coins, can you find how much there is in all?  "My son is learning so fast how to buy, pay and receive exact change.  Amazing Coin is designed to be kid-friendly!  Which coin has the greatest value?  Uninterrupted and unlimited play: game continues as long as the player desires.