Just in case you got an email about your account not having billing information, it was an error:
Some of you might have gotten an email about your account billing not having any information on it. You received these due to the fact we made a mistake and forgot to turn off the email notification. This means some of you got emails prematurely. We are sorry for any issues this might have caused and we are correcting this issue.
It’s probably tied to the Account Center downtime that was scheduled.