Billing problems

Hi,

I was trying to update my billing info for the bill, was directed to fastspring support and there was an issue with the address.

Their answer was the next message:
Hello,

We do apologize for the inconvenience, however, we are no longer able to update the Country post order. We realize this is a change in process and the decision was not made lightly.
Please understand that there are tax implications that differ from zip to zip and country to country which make this type of change problematic from a tax perspective. Your options are to either leave the order as is or cancel and place a new order.

I do apologize for any inconvenience.

Please let me know if I can be of further assistance.
End of message.

¿I guess my option is to cancel and reorder but is this with rankmath or with them?

Thanks in advance.