What is JotForm?
JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
At JotForm, we want to make sure that you’re getting the online form builder help that you need. Our friendly customer support team is available 24/7.
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.
Just set Per Additional Item to zero so the shipping rate is the same for multiple quantity orders. Check this screenshot:
Just in case you're wondering how to open shipping window, simply click the magic wand icon on the form builder when you click your payment field. Click next until you reach to the shipping section. Check this screenshot:
If you need further assistance, let us know.