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.
You can try to check the Get Referrer widget. This would allow you to see where your form was accessed first before it was loaded.
On the submission page, it would show like this:
It shows www.facebook.com on my submission page since the form is added as a link on my Facebook page.
I hope this helps. Let us know if you need any further assistance. Thank you.