I’ve been fighting with this.
You need to comment some lines in CatListDisplayer.php file inside the includes folder of you catlist plugin.
This is the portion of coded changed:
`//Posts loop
foreach ($this->catlist->get_categories_posts() as $single) :
//if ( !post_password_required($single) ) :
$this->lcp_output .= $this->lcp_build_post($single, $inner_tag);
//endif;
endforeach;`
Hope it helps