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 did check your web page where you have embedded your form and found that you have used your form's script embed code.
Please be noted that for forms to work correctly in mobile devices, we recommend to embed form using its iFrame embed code. Please embed your form using its iFrame embed code and that should solve your problem. The following guide should help you: http://www.jotform.com/help/148-Getting-the-Form-iFrame-Code
Hope this helps.
Do get back to us if the issue persists.