Please add this code in your wp-content/plugins/wplms-customizer/wplms-customizer.php file :
add_filter('wplms_fontend_cpt_query','custom_wplms_fontend_cpt_query');
function custom_wplms_fontend_cpt_query(){
return $args= array(
'post_type'=> 'product',
'author' => get_current_user_id(),
'numberposts'=> 999
);
}