Credit cards that can be registered as payment methods are AMEX, Master, Visa, or JCB.
If you are unable to register, please check your card number, expiration date, and security code again to make sure they are correct.
In addition, you may not be able to register due to restrictions on use by your credit card company or other reasons.
Even if registration is possible, billing may fail at the discretion of the credit card company.
If billing fails several times after network creation, the network may be deleted.
If you have any questions, please contact us by the request form.