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JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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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.
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I have checked your form, but it seems to be working fine:
I would recommend you to test the standalone verision of your form, it's this link: http://www.jotformeu.com/form/31964450431350
If you have no problems with that version of your form it could that some script is getting in conflict with your website form version, so, I would recommend you to reembed your form using iFrame code, please refer this guide to know how to get iFrame code: Getting the Form iFrame Code
Then test your form in ipad. If the issue still persisist don't hesitate to contact us.