Open Account in the dashboard. It shows your email, whether it has been confirmed, and whether a password is set.
To change a password, enter your current one, then the new one twice. New passwords are ten characters or more. If you have forgotten the current one, log out, sign in with a link from the login page, and come back to Account within fifteen minutes; in that window the current password is not required.
When the password changes, every other device is signed out and this one stays in. A notice is emailed to your confirmed address so that you know it happened; if you did not make the change, sign in with a link and set a new password at once.
Too many wrong attempts at the current password pauses the form for fifteen minutes; the link sign-in route works meanwhile. The Account page also shows whether your email is confirmed. If it is not, look for the welcome email and click its link, or ask for a new one from the login page.
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