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 checked your form titled "Registration Form" and I was still able to check and edit the list of products you have.
Here's a quick step by step:
1. First, select the payment field and click the wizard or wand icon.
2. After clicking the next buttons, you should be able to view the product list setup like this:
To edit, simply click on the product and the product details setting will show up.
I hope that helps. Please do make sure that you are still logged in and your session have not yet expired or timed out.