Thanks! So for that part, it's kinda like the game Marco Polo. You want to listen for where the "Push the Button" chorus is coming from, and move in that direction.
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What browser and OS are you using for it? Web version for me works on Firefox, Chrome, and Safari for Mac. Plus I had some Windows users on Chromium browsers test it before release and it worked for them too.
Edit: I also made the button by itself instead of in a row of a buttons to help differentiate it a bit.