I can't log into my main either. Tried to go to Jueno and now sitting at area "unknown" and now I'm not able to use that character at all. If I manage to get to the character select screen without network issues every attempt to log in as my main sits at a black screen until it finally times out.

EDIT: Forgot to mention I sat on hold for over 20 minutes trying to get technical support and no one ever picked up.