Digging is broke as well, it hits and makes sound but no blocks disappear.
Thanks for testing, and glad the keys work now! For digging: you have to HOLD the arrow key / A or D (or S to dig down) until the block breaks - a quick tap used to only play the hit sound and lose the progress. I just updated the game so short taps now keep their progress for a moment, and a tip shows up if you keep tapping. Also check that the drill is strong enough for the layer you are in (it says “Drill too weak” otherwise) and that you still have fuel. If it still doesn’t work, tell me which layer you are in and whether you are standing on the ground when you dig.