Problems getting ActiveDirectory to work

Hello, I'm trying to configure the Active Directory connection to my AD server. I'm sharing my configuration, btw how can I enable debug so I can see why is failing?

// LDAP

$config['auth_ldap_binddn'] = "cn=observium,ou=Groups,dc=my,dc=domain,dc=com";
$config['auth_ldap_bindpw'] = "Pa$$w0rd";

$config['auth_ldap_attr']['uid'] = "sAMAccountName";
$config['auth_ldap_attr']['uidNumber'] = "objectSid";
$config['auth_ldap_attr']['cn'] = "name";

1. $config['auth_ldap_attr']['dn'] = "distinguishedname";
   $config['auth_ldap_objectclass'] = "person";

$config['auth_ldap_version'] = 3;
$config['auth_ldap_server'] = "192.192.192.1";
$config['auth_ldap_port'] = 389;
$config['auth_ldap_starttls'] = FALSE;

$config['auth_ldap_prefix'] = "CN=";
$config['auth_ldap_suffix'] = "dc=my,dc=domain,dc=com";
$config['auth_ldap_group'] = array("CN=bserviumgroup,OU=Groups,dc=my,dc=domain,dc=com");
$config['auth_ldap_groupbase'] = "OU=Groups,dc=my,dc=domain,dc=com";

$config['auth_ldap_groupmembertype'] = "fulldn";
$config['auth_ldap_groupmemberattr'] = "member";

unset($config['auth_ldap_groups']);
$config['auth_ldap_groups']['CN=driobservium,OU=Groups,dc=my,dc=domain,dc=com']['level'] = 10;

1. $config['auth_ldap_groups']['CN=Observium Users,OU=Groups,DC=example,DC=COM']['level'] = 1;

// End config.php

Thanks in advance