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.
Please be noted that you can only have one payment question in your form. If you try to add more than one, it will give you the error message.
I did check your form "Photography Session Agreement -" and it seems you have already deleted the payment question. You should be able to now add a payment question. I did test and I was able to add it. Please check the screenshot below:
Do try it again and get back to us if the issue persists.