Hello webcity,
You should be able to accomplish this when using a shortcode by setting the orderby to post_date like so
[simple-links orderby="post_date"]
If you are using the widget you may accomplish this by using the filter simple_links_widget_settings. Add the following to your theme’s functions.php file.
add_filter('simple_links_widget_settings','change_widget_settings');
function change_widget_settings( array $settings ){
$settings['orderby'] = 'post_date';
return $settings;
}
I have not tested these but they should do the trick.
Hope this helps.
Cheers