Show custom post types on Tag, Archive, Author pages

archive_custom_post_types.php

<?php

// Add custom post types on Tag, Category, Author archive pages
add_filter('pre_get_posts', 'query_post_type');
function query_post_type($query) {
  if(is_category() || is_tag() || $query->is_author) {
    $post_type = get_query_var('post_type');
  if($post_type)
      $post_type = $post_type;
  else
      $post_type = array('post','resource','user-post'); // replace cpt to your custom post type
    $query->set('post_type',$post_type);
  return $query;
    }
}