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.
I understand that you want to pre-populate some of the fields on the form. The pre-population of the fields on a form is possible by following the guide Prepopulating-Fields-to-Your-JotForm-via-URL-Parameters.
You may also take a look at the prepopulate app that helps in pre-populating fields on a JotForm.
Hope this information helps!