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.
Are you attempting to upgrade to purchase a JotForm subscription plan?
Mastercard should work as far as I know of since we have several users using it already.
Did you enter in the payment information correctly?
I would recommend trying again and if there is still a problem just let us know so we can help more.