JotForm is a free online form builder which helps you create online forms without writing a single line of code. No sign-up required.
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 see that the issue occurs when the form fields are set to required in Authorize account. Please check if you have any of the form fields checked as required in your Authorize account settings (Account -> Settings -> Payment Form -> Form Fields).
Hope this information helps!