Branflakes

Hey just downloaded the client for Mac. Just wondered if there was like a confirmation time on being able to log in with an account onto the servers as i keep getting an incorrect account information error... Realm list is set correctly, in fact it was correct upon download and i didn't have to edit it... Also just to confirm, what is my account name for the login? I assume its my display name as my email is too long to type into the account name box?