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.
Have you tried embedding your form using the instruction provided in this article: Adding Form to Shopify Store Frontpage? You can also try to embed your form using the iFrame emebed method. Just follow the instruction provided in this article to get the iFrame embed code of your form: Getting the Form iFrame Code.
Do let us know if you need further assistance.