Please help me. I just got the game today (I'm using my sister's account to post this), but when I try to log in for the first time, it won't let me. It seems that all of the help available requires a Playonline id, but it won't let me register with Playonline--only Square Enix.

I get to the screen and I am using the correct password but it tells me it's wrong. Please help me here.