Since you've paid for JotForm using CC, you may change your billing information at Plimus (www.plimus.com) one of our chosen payment gateway. Here's how you can update your CC details.
1. Find your Plimus username in the email that was sent to you when you first paid for your subscription.
4. Go to My Account then click "Change" on the payment method column (far right side) of your active Jotform subscription.5. Save the changes you made
Please let us know if you've encountered any problems with this so that we can further assist you. Thanks!