Man, you can modify your profile and change the information! There is a big EDIT button on the profile page.
As long as you have your certificate on your phone (as a .pdf) or printed and kept in your wallet or with you, you're good to go.
True but I would think misrepresenting accurate information on that form could be a finable offense. Do you want to risk their umpteen thousand dollar fine? or hassle with legal fees to fight the FAA? I don't.