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.
Thank you for contacting us.
Are they getting the following error on your Authorize.Net payment form?
Error 11: A duplicate transaction has been submitted.
If this is the case, you might consider suggesting your customers wait two minutes before submitting a new form entry (to bypass Authorize.Net duplicate transaction time frame), or use another credit card for the second entry.
There is Duplicate Transaction tracking mechanism on Authorize.Net, it has two minutes time frame by default. You can find more information in their documentation:
Please feel free to contact us if you need any further assistance.