On the sign-in page choose Forgot password?, enter your email address, and select Send recovery email.
Calder replies with "If the account exists, a recovery email has been sent." Open the secure link in that email and choose a new password of at least 10 characters, including letters and digits.
Each recovery link works once. If a link is invalid, expired, or already used, request a new recovery email and open the newest one.
If you have turned on two-factor authentication, enter the 6-digit code from your authenticator app before you save. Calder signs you out when the reset finishes, so sign in again with your new password.