I pre-ordered mine from SE Australia and have received the code, however when entering into Mogstation, I tried entering at "Enter Item Code" and said it's been used. I do however have "FFXIV: Heavensward - Early Access Windows(R)" and I have "FFXIV: Heavensward - Pre-order Bonus Items" listed in "View additional items". Does that mean the code is entered successfully?

*confused*