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 that you are using a custom sender email address in the Autoresponder. You can delete and add a custom sender in the Account Settings page.
In the Sender Emails section, click the "Edit" link. After that, the list of emails will appear. You can remove an email or add a new one.
After that, you need to change the Sender Email in the Autoresponder wizard. Here's a guide: Setting-Up-an-Autoresponder-Email.
Please check the complete guide here: How-to-Edit-Delete-Sender-Emails-on-SMTP-Settings.
Hope that helps. If you have any questions, let us know. Thank you.