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 checked your form, cloned it and view it on my Android device, and this is how it looks like:
If you want the image header to be mobile responsive, please follow this guide: https://www.jotform.com/help/311-How-to-make-Forms-Mobile-Responsive
After applying those changes, this is how it will look liked:
I hope that helps. Do let us know if I misunderstood your concern.