A billing administrator can update the payment method from Billing and the plan or payment section. Open the secure payment portal, enter the new method there, complete any bank authentication, then return to Nonli and verify that the new method is shown before the next renewal.
Never send a card number, security code, bank password, or authentication code to Nonli support. Support can investigate a payment status or portal error but cannot collect those secrets through chat or email. If the bank rejects the update, contact the card issuer and verify online and recurring-payment permissions.
Changing the method does not necessarily retry an already failed invoice immediately. Check the visible payment status and retry action, or provide support with the invoice identifier, timestamp and exact error—without payment credentials.