Ahaha, no man you are not, we clearly didn't make it clear enough!
If you just approach the Start button you can move it around the screen, if you manage to push it against the roof (made of timber) of the house in the center of your screen you'll be able to progress.
Ok that's totally a bug, sorry for wasting your time!
We tested it and worked well on different PCs, but you are not the only one experiencing unexpected bugs, we thought you were simply having hard times with the riddles so we didn't want to spoil you the game at first! D:
