Oh no! Sorry if some things were unclear, but to get perfect scores, the colored arrows rising up to the top has to be near on top of the gray arrows that light up when you press an arrow key.
I see what you mean now. I reloaded the page and it worked! (Although a bit buggy because of resizing/scaling issues.) Do you see the waves at the top of the screen? Those aren't supposed to be there. I'll try to see if I can fix that. Sorry.