We understand that sometimes you have a new payment source or new credit card, and wish to use it in the next payment.
If you are using Paypal, go to your PayPal dashboard and add a different funding source. Be sure to remove all old source of funding.
Alternatively, you can first cancel your recurring payment, and start a new subscription with Piktochart (not recommended).
If you used Braintree to make the payment, the only way to change the payment source currently is to wait until the current subscription expires, and re-subscribe with your new payment information. We hope to provide an easier solution in the near future!