registration code for PC

Hello!:D
need some help to locate and record one second code!:mad:

Well first of all I went to this site https://www.findmyorder.com/sstore?A...r&Locale=en_US

Where to put the information that asks ... However I am not redirected to this site:
https://store.na.square-enix.com/

And so is an unending circle where I just got the serial code and the early access code ... can for the launcher of the game need to rotate the second code ....:mad:

Please I need help to find the second code. However would like to make a sort of tutorial


Thank you!