IAM user: On the IAM console, choose Security Settings in the left navigation pane and change the password on the Basic Information tab. For details, see "Changing the Password of an IAM User" in the Identity and Access Management User Guide.
If you have not bound any email address or mobile number to the IAM user you are using, request the administrator to reset your password. For details, see "Changing the Password of an IAM User" in the Identity and Access Management User Guide.