Changing the Billing Information in the new Rakuten TV app is very easy
Click on the symbol as in the picture :
Go to "Payment method" from where you can update your payment details :
Complete the four required steps correctly: Cardholder name, card number, expiration date, and security code (CVV).
Remember that currently, Rakuten TV payments can only be made through a PayPal account or a VISA or MASTERCARD credit or debit card valid in Spain.
Once all fields are completed, your payment information will be saved for future charges, and you can begin making purchases or rentals on Rakuten.tv.