I was 1.0, never deactivated my service account and was able to log in with no problems. I'm guessing the disabled service account is what causes this?

On a side note, the SE account management site doesn't show my current account info at all. Mog Station does. However, payment setup is done through the SE account management site. It's like they're using 2 sites to manage accounts but they don't properly share any info.