Why do I still have to log in with my old name?

[PaulB]

I changed my name last time I was on it, months ago. It still makes me log in with my old name then when I'm logged in it displays my new name. Why?

[IceNineKills]

You only change your display name.

[PaulB]

Oh right so my original name will always be my name?

[IceNineKills]

Yes, you still use your original one to log in with.

[Kyle]

It's for security so people trying to hack your account won't know your login name