Cool novel puzzle game. I love the zen meditation game juice and feel. Reminded me of a sand garden. Great sound design too. I was wondering if there was some way you could show the player visually that they can flip direction left to right, like if the puck did a little flip when changing direction left to right, or maybe if the puzzle box itself had little handles on the left and right sides, and the whole level could kind of get a little "juke" or tilt when the player pressed the left/right inputs. At the moment, there's no real in-game justification for why the player can control direction left to right but not up and down, you just have to remember.
I also think maybe you aught to consider focusing more on the puzzle side here and less on the reaction timing side of your design. Really these are separate skills / parts of the brain / appeal / audiences, and I personally think you should lean into the puzzle side for this game you've got going here. What I mean is, if I can reason out the solution, I should be able to finish the level in my next go, and not have to struggle against getting the at-times rather quick set of inputs correct. I think that's a different genre that isn't serving your design here. That's my personal opinion anyways.
All in all, this is a very strong submission with clever novel mechanics and outstanding presentation, one of the best I've played in this jam yet. Great work!