add( 'pkce_missing', __( 'Warning: This client does not support PKCE. The connection may be less secure.', 'activitypub' ), 'message' ); } login_header( /* translators: %s: Client name */ sprintf( __( 'Authorize %s', 'activitypub' ), esc_html( $client->get_display_name() ) ), '', $login_errors ); ?>