Unless I'm not understanding correctly, your account does not require an e-mail activation when you change your e-mail, if you have already been playing on the account without any issues. Since your account has already been activated, a new e-mail activation should not be required in order for you to play. Keep in mind, though, that if you wish to edit your game e-mail, this is best changed by logging into the golden box at the top of the website, entering User Details, and changing your e-mail from there.