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 PayPal Sandbox is an environment within which you can prototype and test PayPal integrated form. You can test your form and make dummy payments as well. The PayPal Sandbox is an almost identical copy of the live PayPal payment system.
You can enable the Paypal sandbox by clicking on the gear icon of your paypal payment question and then clicking on the "Show Properties". Please check the screenshot below:
You will have to signup for a PayPal Sandbox account by clicking on the following URL: https://www.sandbox.paypal.com/
Then use this email address to make the PayPal payments. The following guide should help you: