Error Code: i2501 - Level Boost purchase

As the title says:

You cannot use this function.
Please contact the SQUARE ENIX Support Center for additional details.
Error Code: i2501

New player, just trying to buy a level boost.

However, I receive this error no matter what the item I select to be purchased is.

I have emailed support and awaiting a response. Not sure if this is an error on my end. It always happens when I select Visa or Mastercard as payment, and I also get this error when attempting to add Crysta to my account.

Any help would be appreciated.

Good afternoon and thank you for posting on the Final Fantasy XIV Technical Support Forums.

This is not a technical issue, but we may still be able to assist. Be sure to follow up with the email when you get a response.

It can be caused by an abnormal connection, a public network (Internet cafe, University connection), the use of a VPN or simply too many rapid attempts. We advise waiting 48 hours before trying again as too many transaction in a set amount of time can make the error worse.

This thread will be moved to the 'Separate Support Required’ subforum as contact with the Square Enix Support Center is necessary to resolve the issue.

Thank you for visiting the Final Fantasy XIV Technical Support Forums.