The Community in more languages
Now the forum welcomes more languages.
You'll see a green translate button in comments and discussions to turn them into English
If I am understanding your question, is this the treasure chest where you have to clear the level before and then it opens up? The treasure chests cannot be fixed and believe me their team has been trying to fix it but they can't find a solution. My game stopped showing the treasure chests so I think they finally took it off the game.