"error code2101 You have entered an invalid payment method. Please use one of the following Japan-issued credit cards: Visa, Mastercard, JCB, American Express, and Diners Club. (XX)" is shown. Created March 09, 2020 04:35 Updated March 09, 2020 09:33 You will see this error message when a non-Japanese credit card is selected. Please sign up with the credit cards issued in Japan. Visa/Mastercard/JCB/American Express/Diners Club. Related articles What is "Hulu Ticket"?