Thanks for your feedback ^^. We think it is a Problem with the wegbl build. You should be able to move the shadow box onto the „shadow-button“. And its strangly only working on around 50% of all devices.
If you want to try again, you could jump on the edge of the shadow box and moving forward whilst standing on it. It will move a little bit.
Next time we are going to upload the standard builds too, because they are working perfectly fine.
Whatsoever thank you for playing the game. :D