Hi there,

Please, try to add this CSS rule in Appearance > Customize > Additional CSS:

if( !function_exists('yith_wapo_change_formatted_settings') ) {
    function yith_wapo_change_formatted_settings($formatted_settings)
    {

        $formatted_settings['select_width'] = 100;
        return $formatted_settings;
    }

    add_filter('yith_wapo_get_formatted_settings', 'yith_wapo_change_formatted_settings');
}

Unfortunately, we cannot replicate the second issue. Could you share with us the settings of the add-ons for this case?

Have a great day!