I had the same issue and this is what they sent me...


A pre-authorization is a temporary hold to verify that funds are
available when you place an order. Pre-authorizations are typically
removed from your credit card transaction history when the full charge
processes and funds are withdrawn. However, in some cases, this process
can take up to 2 business days. Rest assured, you will only be charged
once for your purchase.

Please note that debit cards may display both the pre-authorization and
the completed payment as full charges for up to 5 to 7 business days
from the date of purchase. If you need assistance removing a
pre-authorization from your debit card transaction history, please
contact your bank or financial institution. We are not able to assist
with this action at the Square Enix online store.

if that helps you guys any