Those of you that weren't able to access your account settings, login, make purchases, ect., are you still having that issue or were you able to get in some time within the past 5 hours or so?
For special characters, I honestly don't have a full list of what it allows. I know that if you receive a message stating "Password contains invalid characters" when entering your password, that means that one of the special characters used isn't being accepted. Characters such as " ? ! . # " are accepted but some like " @ $ % " are not. I'll try to get a more detailed list of what works but this should help to start.