Thanks for the feedback, always appreciate it.
May I ask what exactly caused the confusion? Since, to me at least, starting the game is just a matter of clicking the button.
When you click on the buttons it should not shoot, it should do what the button does. I agree tho, the unlock/lock is confusing in the main menu, but in the game its there so you dont accidentally hit the button back to menu while playing. For now I edited the game page to be a bit more helpful on this, will fix this after voting period.