Cerberus username issue

Hi!

I've got a problem: I've got a mass effect 2 dvd with cerberus code, i am installed it, and registered to the EA ingame. After that register the cerberus code, and it works, connection complete. But.... when i want to get the dlc-s, the username and password can't work. Back to ingame, it works. The question is: how can i get my username from the game? Maybe i misspelled it ingame...

Thnx:
CoLTuci