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.
If I understand you correctly, you're saying that you cannot add quantity on a product right? I checked your form and I was able to put the quantity I want on a product.
You can change the default quantity of a product. Please refer to these steps on how to do it.
1. Click the Paypal "Wizard" icon.
2. Click the "Next" button.
3. Click the "Next" button again.
4. Select the product. Click the pencil "Edit" button.
5. On the "Edit Option" you can change the default quantity of the product.
6. Click Next and Save the products.
Hope this helps. Let us know if you need any help.