Incomplete puzzles – Abby Monkey® Preschool Shape Puzzles Lunchbox: Kids Favorite First Words Learning Tozzle Game for Baby and Toddler Explorers Review

I know my grandchild would love this puzzle series if they worked. I have tried, but am unable to complete even one puzzle. The pieces get stuck and bounce back to their original position like they are attached by springs. I have an iPad2. Is that the problem? Please help me with suggestions for settings or something that might help get this app working properly. Thanks.
Review by Nanadoe2 on Abby Monkey® Preschool Shape Puzzles Lunchbox: Kids Favorite First Words Learning Tozzle Game for Baby and Toddler Explorers.