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 also suggest that you create an account first. You can use this link https://www.jotform.com/signup
to signup for a JotForm account using your email.
As to your current question, its a bit unclear what exactly it is you wanted to achieve on the form.
There are several ways to have an auto ID# in the form... for example, you can just use the Unique ID field and it should give you such auto ID#
Hope this help. Please inform us if you need further assistance.