Your profile displays your Voyzu login details. Your first and last names are displayed on the Profile button on the top right of the screen. Note that your email is your Voyzu login; if you change your email address you will need to sign in using your new email address. Your email must be a Gmail address or a Google Workspace email.
Note that you cannot change your own role. Only another user with ADMIN permissions can change your role. To see account admins navigate to Users > Manage users.