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 believe the Preview Before Submit widget is suitable for your requirement. It allows your users to preview all their selections before submitting the form. Here's the link to that widget: https://widgets.jotform.com/widget/preview_before_submit
You can add it to your form by following this guide: How to Add a Widget to your Form?
The Form Collapse field shows up on the Before Submit page. It shouldn't, hidden is selected.
Is it possible to have My Products Showing on that page?
To hide the form collapse sections, simply click the wand icon on the widget.
Then from the wizard, set the Show Form Sections to "no".
Your customer's selected product and any other fields visible on your form will show up on the Preview.