I gave my daughter an extra iPhone 6s to use as a iPod Touch after my wife upgraded to 8 plus. The issue is she has downloaded a few apps with no issues but there are a few she said she is having issues with. She is able to download the app but when she tries opening them the they close really fast....like it 1 second. She tried downloading Candy Crush and Boomerang and this has been the issue. Anyone know why?