Failed to connect to database, [SQLSTATE] 1045

[james.w...@h2ope.co.nz]

First up, awesome user system, works a treat on my wamp localhost

however I have moved it to my server and now it will not connect. 

questions

do I need to install with composer or can I just ftp all the working files up to my server. 

I can connect phpMyAdmin and with 3rd party mySQLyog to my database. 

i'm using the same config in setting up user 

<?php

include("../vendor/ptejada/uflex/autoload.php");

$user = new ptejada\uFlex\User();

        $user->config->database->update(array(

'host'     => 'localhost',

'user'     => 'checkz',

'Password' => '[removed but using the same as set up]',

'name'     => 'checkz', // Database name

));

$user->start();

 ?>

I have configured my php.ini file for the PDO .dll files 

extension=php_pdo.dll

extension=php_pdo_mysql.dll

what am I missing why does this work so smoothly on my localhost but will not connect to the database on my server?