Very strange! I'm sorry to hear that it's not working, though. I've had a few people tell me that it's not working for them, but just as many people have it working fine (as well as my friends who tested it).
I'm assuming this is also what lzyengn was experiencing as well. I have some suspicions that it may have something to do with how I was checking keypresses in Love2D, but I can't say for sure. Again, very strange. Unfortunately, at this point in time, I don't really know how I would fix it, considering that the game doesn't necessarily break. Hopefully in the future I'll find a fix for it! (On an off-note, I recently encounter the Pancake library for Love2D and was thinking of remaking the game with OOP, so maybe the weird thing that's happening will be fixed at that time)