Buy domain failuer

■ Background
I tried to buy domains from ‘Buy domain’ → ‘Register Domains’ at left blade menu.
However, below error message was showed, so I could not buy domain.

■ Information
I tried to buy the domain some times from Japan but same error message was showed.
I checked the information (card number, address etc.) for buying domain is correct.

■ Ask
Would you tell me how to solve this error?

This is something that is not going that the Community is going to be able to solve, please open a ticket via email to: billing AT cloudflare DOT com

You will get an auto-reply with a ticket number. Please post the ticket number here, even if the ticket auto-closes, and we can escalate it.

Thank you for checking this issue.
Below is the ticked number from the auto-reply.