Actually it was simple.
In get.php I made some edits and it worked.
/**
* Data to exclude from export
*/
public static function exclude_fields(){
$exclude_fields = array (
'user_pass'
, 'q_eud_exports'
, 'user_url'
, 'user_registered'
, 'user_status'
, 'display_name'
);
Also
/**
* Get the array of standard WP_User fields to return
*/
public static function user_fields(){
// standard wp_users fields ##
if ( isset( $_POST['user_fields'] ) && '1' == $_POST['user_fields'] ) {
// exportable user data ##
$user_fields = array(
'ID'
, 'user_email'
);
} else {
// just return the user ID
$user_fields = array(
'ID'
);