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.
The error is related to your Authorize.net account settings. The email field was required to your account. You have to uncheck the email option, you can follow these steps:
a. Login to your Authorize.net Merchant account
b. Go to your Settings -> Payment Form -> Form Fields
c. Uncheck the required box for the E-mail Address.
Otherwise, make sure to select a required email field in your form in the authorize.net properties:
If you have already done this and still nothing, I would suggest contacting Authorize.net support and ask them on how you can fix this in your account.