Move the user fields below the "create an account" fields
<?php
/*
 * Plugin Name: Easy Digital Downloads - Move User Fields Below Account Creation
 * Description: Move the user fields below the "create an account" fields
 * Author: Easy Digital Downloads
 * Author URI: https://easydigitaldownloads.com/
 * Version: 1.0
 */

remove_action( 'edd_register_fields_before', 'edd_user_info_fields' );
add_action( 'edd_register_fields_after', 'edd_user_info_fields' );
To implement this snippet on your site, create a brand new, empty WordPress plugin and paste the above code inside.