User granted posts

There is currently no built-in way to do this, but there are 2 solutions:

1. You can use the API in this way:

if(rua_get_user(get_current_user_id())->has_level($level_id)) {
  //display post
} else {
  //display nothing or teaser
}

2. Or, if you only restrict content by page or post ID, add this snippet to functions.php in your theme:

add_action( 'pre_get_posts', function($query) {
	if (!is_admin() && !$query->is_singular() && (!isset($query->query["post_type"]) || $query->query["post_type"] != RUA_App::TYPE_RESTRICT)) {
		global $wpdb;
		$other_levels = array_diff(
			array_keys(RUA_App::instance()->get_levels()),
			rua_get_user()->get_level_ids()
		);
		$result = $wpdb->get_col("SELECT m.meta_value FROM $wpdb->postmeta m INNER JOIN $wpdb->posts p ON m.post_id = p.ID WHERE m.meta_key = '_ca_post_type' AND p.post_parent IN ('".implode("','", $other_levels)."')");
		if($result) {
			$query->set('post__not_in', $result);
		}
	}
	return $query;
} );

This will remove restricted posts/pages/custom post types from blog page, search results, custom lists, etc.

Let me know if either of these works for you!