I am really sorry to rate this low.. I love this game.. but really, I can't complete my mission at potion class (wiggenweld potion review) because there have no colouring object that I should collect to filled the star.. I even try to touch all the objects on the screen.. I did report it, but the time was up.. no answer and it end up the house point is -7.. I face this problem two times and at the same place..