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 most recent form "Order form with images, sizes and quantity options", and it appears that the products that you added are there.
However, please note that you are currently using the Purchase Order integration, not the Paypal integration.
If you want to change the integration from Purchase Order to Paypal, simply click the X button on the top right of the integration to delete it. Make sure to select Yes when asked if you want to keep the products.
Once the purchase order is removed, you can then select the Paypal integration from the Payment Fields and it should have all the products there. Please see this guide for more info: PayPal Forms
If you need further assistance, please let us know.