Locked out of your account
Updated
After five failed password attempts in a row, an account locks for 15 minutes. The log-in page does not tell you it has happened, on purpose.
How do I know I am locked?
You see "That email and password don't match" even with the right password. That one message covers an unknown address, a wrong password and a locked account, so that nobody can test which addresses exist.
How do I get back in?
Wait 15 minutes and try again, or reset your password, which lifts the lock at once. After the lock ends, the count starts afresh.
What does "Please confirm your email first" mean?
You typed the right password, but the address has not been confirmed. It appears only after a correct password. Press Send the confirmation link again. See confirm your email.
What does "Too many attempts" mean?
"Please wait a minute and try again" is a separate limit, on requests from your connection. It clears on its own in about a minute.