diff --git a/includes/activity/class-activity.php b/includes/activity/class-activity.php
index bd13cf8..8799238 100644
--- a/includes/activity/class-activity.php
+++ b/includes/activity/class-activity.php
@@ -26,6 +26,7 @@ class Activity extends Base_Object {
 			'schema' => 'http://schema.org#',
 			'pt' => 'https://joinpeertube.org/ns#',
 			'toot' => 'http://joinmastodon.org/ns#',
+			'litepub' => 'http://litepub.social/ns#',
 			'value' => 'schema:value',
 			'Hashtag' => 'as:Hashtag',
 			'featured' => array(
@@ -36,6 +37,8 @@ class Activity extends Base_Object {
 				'@id' => 'toot:featuredTags',
 				'@type' => '@id',
 			),
+			'discoverable' => 'toot:discoverable',
+			'sensitive' => 'as:sensitive',
 		),
 	);
 
diff --git a/includes/activity/class-base-object.php b/includes/activity/class-base-object.php
index bfac562..3b6703b 100644
--- a/includes/activity/class-base-object.php
+++ b/includes/activity/class-base-object.php
@@ -627,7 +627,7 @@ class Base_Object {
 			}
 
 			// if value is empty, try to get it from a getter.
-			if ( ! isset( $value ) ) {
+			if ( ! $value ) {
 				$value = call_user_func( array( $this, 'get_' . $key ) );
 			}
 
@@ -636,7 +636,7 @@ class Base_Object {
 			}
 
 			// if value is still empty, ignore it for the array and continue.
-			if ( isset( $value ) ) {
+			if ( $value ) {
 				$array[ snake_to_camel_case( $key ) ] = $value;
 			}
 		}
diff --git a/includes/class-activitypub.php b/includes/class-activitypub.php
index b5c2db8..da47875 100644
--- a/includes/class-activitypub.php
+++ b/includes/class-activitypub.php
@@ -216,7 +216,7 @@ class Activitypub {
 			);
 		}
 
-		if ( ! \class_exists( 'Nodeinfo' ) && true === (bool) \get_option( 'blog_public', 1 ) ) {
+		if ( ! \class_exists( 'Nodeinfo_Endpoint' ) && true === (bool) \get_option( 'blog_public', 1 ) ) {
 			\add_rewrite_rule(
 				'^.well-known/nodeinfo',
 				'index.php?rest_route=/' . ACTIVITYPUB_REST_NAMESPACE . '/nodeinfo/discovery',
diff --git a/includes/class-migration.php b/includes/class-migration.php
index e81f5dc..cd13f8d 100644
--- a/includes/class-migration.php
+++ b/includes/class-migration.php
@@ -1,6 +1,7 @@
 <?php
 namespace Activitypub;
 
+use Activitypub\Activitypub;
 use Activitypub\Model\Blog_User;
 use Activitypub\Collection\Followers;
 
@@ -135,6 +136,8 @@ class Migration {
 				}
 			}
 		}
+
+		Activitypub::flush_rewrite_rules();
 	}
 
 	/**
diff --git a/includes/collection/class-users.php b/includes/collection/class-users.php
index 506722b..036bbc3 100644
--- a/includes/collection/class-users.php
+++ b/includes/collection/class-users.php
@@ -87,6 +87,7 @@ class Users {
 				'number'         => 1,
 				'hide_empty'     => true,
 				'fields'         => 'ID',
+				// phpcs:ignore WordPress.DB.SlowDBQuery.slow_db_query_meta_query
 				'meta_query' => array(
 					'relation' => 'OR',
 					array(
diff --git a/includes/model/class-blog-user.php b/includes/model/class-blog-user.php
index 32d167a..471f2c5 100644
--- a/includes/model/class-blog-user.php
+++ b/includes/model/class-blog-user.php
@@ -23,6 +23,13 @@ class Blog_User extends User {
 	 */
 	protected $type = 'Group';
 
+	/**
+	 * Is Account discoverable?
+	 *
+	 * @var boolean
+	 */
+	protected $discoverable = true;
+
 	public static function from_wp_user( $user_id ) {
 		if ( is_user_disabled( $user_id ) ) {
 			return new WP_Error(
@@ -77,8 +84,8 @@ class Blog_User extends User {
 	 */
 	public static function get_default_username() {
 		// check if domain host has a subdomain
-		$host       = \wp_parse_url( \get_home_url(), \PHP_URL_HOST );
-		$host       = \preg_replace( '/^www\./i', '', $host );
+		$host = \wp_parse_url( \get_home_url(), \PHP_URL_HOST );
+		$host = \preg_replace( '/^www\./i', '', $host );
 
 		/**
 		 * Filter the default blog username.