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.
Adding Mobile Responsive widget to your form should fix the issue. Please see how your form looks on mobile devices with the widget added:
Please also see how you can add the widget:
Do try this and let us know if the issue still persists. It should work well on mobile devices after adding the widget.
Please contact us again if you need any further assistance.