AAC Znote not delivering pagseguro points

[Lurk]

error file showed me this

PHP Notice:  Undefined index: transaction in C:\\xampp\\htdocs\\pagseguro_retorno.php on line 95
PHP Notice:  Trying to access array offset on value of type null in C:\\xampp\\htdocs\\pagseguro_retorno.php on line 103
PHP Notice:  Trying to get property 'quantity' of non-object in C:\\xampp\\htdocs\\pagseguro_retorno.php on line 104
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 841
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 842
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 843
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 872
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 900
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 901
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 841
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 842
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 843
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 872
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 900
PHP Notice:  Undefined index: HTTP_HOST in C:\\xampp\\htdocs\\config.php on line 901
PHP Notice:  Undefined index: transaction in C:\\xampp\\htdocs\\pagseguro_retorno.php on line 95
PHP Notice:  Trying to access array offset on value of type null in C:\\xampp\\htdocs\\pagseguro_retorno.php on line 103
PHP Notice:  Trying to get property 'quantity' of non-object in C:\\xampp\\htdocs\\pagseguro_retorno.php on line 104

pagseguro on config.php

$config['pagseguro'] = array(
        'enabled' => true,
        'sandbox' => false,
        'email' => 'MYEMAILISHERE', // Example: [email protected]
        'token' => 'MY TOKEN IS HERE',
        'currency' => 'BRL'
        'product_name' => 'Premium Points',
        'price' => 50, // 1 real
        'ipn' => "http://".$_SERVER['HTTP_HOST']."/pagseguro_ipn.php",
        'urls' => array(
            'www' => 'pagseguro.uol.com.br',
            'ws'  => 'ws.pagseguro.uol.com.br',
            'stc' => 'stc.pagseguro.uol.com.br'
        )
    );

    if ($config['pagseguro']['sandbox']) {
        $config['pagseguro']['urls'] = array_map(function ($item) {
            return str_replace('pagseguro', 'sandbox.pagseguro', $item);
        }, $config['pagseguro']['urls']);
    }

on my db, znote_pagseguro looks like this


and znote_pagseguro_notifications looks like this


I have the tables in my db and everything in configured right from what I can tell, email, db password and what not
in my config.php I should set ipn to /pagseguro_ipn.php right? cause there's also pagseguro_retorno.php