JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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've tested your form. I am not able to reproduce the same issue that you are having. The form was submitted without any issue.
I think that issue occurs on your website. Could you please indicate the URL of your page? This will help us better analyze the problem.
Furthermore, this issue might be occurs due to conflict on your website. To fix that issue we generally suggest our users to re-embed form with IFrame method without <script> tag.
Can you re-embed your form as you see below?<iframe id="JotFormIFrame" onload="window.parent.scrollTo(0,0)" allowtransparency="true" src="https://form.jotformeu.com/31115362570344" frameborder="0" style="width:100%; height:539px; border:none;" scrolling="no"> </iframe>If it doesn't solve your problem we would appreciate it if you could provide the URL of your website.We will wait for your response.