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 referring to this form http://www.jotformpro.com/form/63626402044953? It appears that the payment field on that form is hidden, which is why your users are unable to pay for the registration. To resolve this issue, simply click the "here" link on the payment field to show the hidden payment field.
If you are referring to a different form or if the issue persists, please let us know.