After logging in Patternfield using an old email, if you want to change the email address, you can click on the profile picture at the top right corner on the page, then choose "Account settings".
Next, type the new email address you would like to change at "Your email address".
After that, enter your current password and click the "Save changes" button to save it successfully.
After saving the changes. Patternfield will send a new verification email to the new email address. Once your new email address is verified, you can log in to the website using the new email. Otherwise, you must use the old email address to log in.