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.
I cloned your form and integrated it with my Salesforce account. I was able to integrate the form with salesforce successfully.
The salesforce integration does not require the API. All you need is your account details and your security token to integrate the form with salesforce. The security token should be emailed to you when you sign up. You can also reset the security token to get a new one by following this guide: How To Reset Your Security Token.
Please do try resetting the Security Token and use the new one to authenticate the integration. If the issue persists, please let us know.