I am at the cave entrance in harry potter 5-7 and I can't get the rings to work once all 3 rings are activated. So I have to move between the places by using the rocks like you did when you come over. So then I get the light and go back via the rocks and put the second light using the luminator and the game kicks me out and you have to start that section all over again. The game is on my ipad so I don't know if there is a glitch there or what, but I am tired of doing this over and over and not moving on in the game. What to do?