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 tried it in Chrome, Firefox and Safari, all of which seem to be working fine.
The widget at the bottom is what is throwing the error:
If this widget is removed everything works fine. If you must have the widget please check your settings to make sure the proper addresses are set within.
Thank you for using Jotform!