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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To further assist you please provide more details of the problem, what form you are having problems with and a screenshot would also help.
For the meantime, this might help you.
You can check this tutorial link or article on what embed code to use on a specific platform, Which Form Embed Code To Use.
If you are having problems on viewing the form using an iPad, iPhone or mobile device, you can use iFrame to embed. Please check this article or tutorial link, Using iFrame Code to Embed.
Let us know if this helps.