There must be something you guys are not doing right.
according to the link below and from my experience, you need to login with your GDI username and password.
Are you logging in at wordpress.com? if so, your doing it wrong. you need to login from your own wordpress admin area. The address would usually be www.yoursite.ws/wp-login.php
See more info in the link below.
My-WS - How to find your login details for your WordPress site with Global Domains International