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.
The Buy Now button is created through Paypal and not with Jotform. Here's the guide from Paypal: https://www.paypal.com/cgi-bin/webscr?cmd=_button-designer&factory_type=buynow
If you want to create a form with us and add Paypal as the Payment Gateway, please follow this guide: PayPal Forms.
Let us know if you need any further assistance about our Paypal Guides.