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.
I have tested the Stripe integration to edit the products on one of my existing forms and I was able to edit them without any issue. I have also tested with a new form which worked well. However, I am able to replicate the issue when I cloned your JotForm to my account to edit the products. The issue seems to be form specific.
Could you try accessing the old wizard to edit the products by accessing the form after adding &old in the URL?
If you do not have any existing form submissions, you may remove the payment field and try adding the products again.
Let us know if you need any further assistance. We will be happy to assist.