I just got this email from support when I emailed them about the code:
So for EU players at least, if we don't get a code by Thursday then we can start panicking haha.
Quote:If you have pre-ordered the PC version of the game from the Square Enix Store you will receive the Pre-order Bonus code (20 digits) by email on the 20th August or 21st August at the latest. If you have not received your code by Thursday 22nd August, please contact us again with your Square Enix Store order number.
So for EU players at least, if we don't get a code by Thursday then we can start panicking haha.