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.
We suggest using the iframe method to integrate your jotforms to your website in order for them to display on your mobile devices as well.
You can see here how to Get the Form iFrame Code
Do let me know how this goes for you. :)
It seems like there is a conflict in your script which causing the issue. To fix it, I would recommend you to add a Mobile Responsive widget in your form for even better form layout.
Here is the guide on how to add a widget to your form.
Feel free to contact us again if you need further assistance.