Autofinalize has been disabled while the site is under attack. Similarly, neither vendors nor buyers can access SR, so we're all in the same boat here. There's nothing you can do right now, and nothing that needs to be done. You can't sign on to finalize your order, but the vendor can't sign on to do anything with the btc either. So, no need to worry - the vendor knows that the site is down/under attack and is aware that no one can sign in to finalize orders.