This happened to me too and I was able to clear it by ignoring the box for one full day. However, a word of warning, if you do what I did and keep getting colorful box after colorful box, you will eventually cover the entire mausoleum. Now, although I have all my interesting things, the game will not allow me to collect them. What I am trying to figure out now is how to gain more lava stones. I keep reading about a store, but I don't see one, unless they are referring to the Microsoft store. I am very close to finishing chapter 1, we'll see what happens when I solve my final puzzle.