How to chenge my email address

Simply go to your profile page, and there you will have the option to change the email address: https://www.jotform.com/myaccount/profile 

If you want to change the email address used to receive notifications, please check this guide:  https://www.jotform.com/help/41-How-to-Find-and-Change-the-Email-Address-Used-for-Notification-Email