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 can see you're using the Authorize.net in most of your forms, this is why I could not fully test your form since I'm using testing Credit Card numbers and it will recognize authentic Credit Cards only.
Could you please provide us the link to the form where you're getting this error?
Please let us know, we will be glad to further investigate the issue on our end.