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 test submitted the form using its direct URL http://www.jotform.co/form/42177209228859
and I was able to submit the form without any error encountered
Can you plesae re-embed the form into your website using instead its iframe embed code.
Follow this guide: -Getting-the-Form-iFrame-Code
Make sure to remove first any previous existing embedded script code of the form in the webste before you use the iframe embed code. This is to make sure there will be no conflict on the web page.
Let us know if issue persist even after doing this already.