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 on an iPhone emulator and the form seems to be visible there.
Do you still encounter the issue on your end? I see that you are currently using script embed code to embed the form to your page. To resolve the issue, can you try using the iFrame embed code instead? Here's how: Getting the form iFrame code. If the issue persists, please let us know.