Exclude category

@marcorroma replace that code by this one and check if it solves the issue

add_action( 'wpel_before_apply_link', 'exclude_by_cat' , 10, 1 );

function exclude_by_cat($link_object) {
  if(!is_admin()) {
    
    // Add cat ids you want to exclude
	  $cat_id_to_ignore = array(1, 2, 3, 4); 

    $url = $link_object->get_attr( 'href' );

	  $post_id = url_to_postid($url);
	
	  $category_detail=get_the_category( $post_id );
	
	  if (sizeof($category_detail) > 0 && in_array($category_detail[0] -> cat_ID, $cat_id_to_ignore)) {
		  $link_object->set_exclude();
	  }
  }
}