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.
Yes, if you do not set a return URL in your Paypal account, it will direct your user to the "Thank You" page you have setup on your form. However, as shown in the screenshot in the original thread, your customers will see an option that let's them go back to the merchant website after a successful payment, in this case, the form's thank you page is the merchant's site. Do let us know if you need more information on this.