Thinking about it now, I wonder if it'd work to just show the chosen moves (with or without subsequent reversing moves) directly on the tiles (i.e. how they will play out) when you press down keys, instead of separately at the side. That shouldn't necessarily make it too easy, as the puzzle is figuring out the path, not how good you are at remembering your moves. If the memory-hurdle is reduced, you may even be able to ramp up the difficulty of the path-finding puzzles themselves. Just some thoughts, but it'd need testing. Hope you will continue working on the game, it has great potential.
HI!!! Yes, someone on the other comment also suggested us to drag and drop the directions directly to the tiles, and we are testing if this works - we don't want to make it too trivial for finding the path, because geometrically without the reverse item the solution could be very easy to found if you can visually see the route. And thank you for the encouragement, we will definitely keep working on this!!