You're doing something wrong if that doesn't work. You're currently the only person with this issue here.

I can give you general troubleshooting tips, but that's pretty much it. I can't fix something that usually works normally:

• You press on the wrong mouse button, instead of left-clicking you do right-clicking. That's why it doesn't work for you.
• You click with your cursor outside the game's window.
• You have the impression that it doesn't work because you click very quickly. I added a cooldown to the move because without it the game would just be very easy. Now you need to be clever to beat the game and shoot at angles to toss the ball around, so to speak.
• You use a browser that's barely/not compatible with HTML5.
• You have a weird mouse or a virus.

In any case, whatever is your issue I can't fix it, so bye.