If when entering the username and password in Perfex CRM you get the following error:
"419 Page Expired!"
You have to access the server and modify the config.php file found in Applicattion\Config\config.php
Modify the following line from “false” to “true”.
$config['csrf_protection'] = defined('APP_CSRF_PROTECTION') ? APP_CSRF_PROTECTION : true;
With this your problem will disappear.