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.
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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 checked your form and the problem is in how your Autoresponder is set. A recipient is set to be the Proposed class name and it should be the email. Please check the below:
So email couldn't go to the right address since it wasn't picking it up from the right field.
You only have to change that field to email.
If you have any additional questions please let us know.