Hi @zietbukuel,
Please review one of the FAQ:
Why aren’t the classes showing up in my widget?
You need to make sure you have an HTML element defined for before_widget and after_widget in your active theme’s register_sidebar functions,
usually located in your theme’s functions.php (/wp-content/themes/yourtheme/functions.php).
This HTML element must have class and id attributes. This plugin will not work if before_widget and after_widget are blank.
Example:
register_sidebar( array(
'name' => 'Sidebar Name',
'before_widget' => '',
'after_widget' => '',
'before_title' => '',
'after_title' => ''
) );
Let me know if this helps, I can also take a look, please provide me a link and the theme/widgets you are using.
Thanks, Jory