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.
The Products you've mentioned are in the Paypal Payment; so you need to open its wizard, then you can edit your products.
To do that,
On the products page, you can follow the steps from the below to edit your products quantity, color, size, etc.
If you stuck somewhere in the process or need more information, please don't hesitate to ask us again.
Have a nice day.