Reset a forgotten password

1. On the sign-in page press "Forgot password?", enter your email and press "Send reset link". The page then says "Check your email" whether or not an account exists for that address.
2. Open the link within 1 hour; it works once. Enter "New password" and "Confirm new password" (at least 6 characters) and press "Update password".
3. You are sent to the sign-in page a few seconds later. Sign in with the new password.

A link that is too old or already used shows "Password reset link is invalid or has expired"; request a new one. A sign-in session lasts 7 days.