I know of someone to whom it happened last year....
Personally, I think there needs to be more than just a tiny little certify button (at the bottom of the page), a status that turns green, and an email. I mean - blaring alarms, an official background across every NRMP web-page "You have CERTIFIED. Touch nothing further," making me click through twenty more arrows to check if I *really* want to edit and re-certify?