How do I change the email address the requests are being sent to? and/or add another email?

I see that the notifications are being sent to marketing@guidanceresidential.com.

You can now check the email history from your account by referring the following guide. 

http://www.jotform.com/help/293-How-to-view-all-your-form-Email-History

Could you please check in spam/junk folder? Please go through the following guide that helps you in troubleshooting email issues.

http://www.jotform.com/help/208-How-to-setup-email-alerts-to-prevent-email-bouncing-related-issues

If the issue still persists, please let us know. We will be happy to look into this issue further.