Update the password when you have access to your account
Click on your user icon on the top right of the window and select Account Settings.
Click the Pen icon next to your profile picture.
Enter a new password for your account and click Save to save the change.
Update the password when you can not access your account
In this situation, please use the "Forgot Password" option from the login page to request the password reset link and follow the instructions in the email to reset your password.