Ah! So at some point earlier you turned the power off, and need to turn it back on to use the machine :D
full answer: Turn the laser forcefield beams back on and you can use the machine :D
Also, sorry for spoiling the rest of the puzzles here, but good job getting coins! :D
Thank you! I deleted my previous comment just in case it was a spoiler. The game is super cute, love the graphics and also the beginning has one of my favorite tropes (won't spoil). Great job!