What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
We believe that if one user has a question, there could be more users who may have the same question. This is why many of our support forum threads are public and available to be searched and viewed. If you’d like help immediately, feel free to search for a similar question, or submit your question or concern.
Unfortunatelly, you cannot change your payment method directly but you can cancel your current subscription and update your payment method by re-upgrading your account.
This guide can help you about how to cancel your paypal subscription.
After that; you need to select creditcard option when you re-upgrade your payment type.
I hope this helps you.If you have a problem again, please inform us.