Quote:Pre-order code redemption website experiencing heavy traffic
We sincerely apologise but the pre-order redemption site is experiencing very high traffic which we are currently working to resolve. We are adding additional bandwidth and server capacity to ensure that all customers will be able to redeem their pre-order codes as soon as possible. Early Access starts on August 24th and Square Enix is working hard to ensure that all pre-order customers will be able to download and play the game.
We are aware of customers receiving the error "Error 3: There was problem. Please try again later." when trying to redeem their Pre-Order code, which is a result of the congestion problems.
Please check back later in the day, when we hope the traffic issues will have alleviated, in order to try and redeem your pre-order code.
Found on the SE support site.