marco13269

You do not see the admin bar in the Preview. Shortcodes not work … I think that the maintance page have not a connection to your WordPress website.
So you need to load wordpress

require( dirname(__FILE__) . '../blog/wp-load.php' );
if (function_exists('wp_create_user')) {
    echo "wp_create_user() found";
}

or

// load only basics
if ( SHORTINIT ) return false;