If you are logged in to your site, the sheets will pre-populate the email for the user you are logged in with, first and last name if those fields are set on your account. To test the sheet as a user who is not logged in, you can try logging out of your WordPress account and visiting the sign-up page again or you can open your browser in an “incognito” or “private” window to view the sign-up page which should simulate a user without any history on your site.