This is the user experience the first time you log in and must change your password.
Enter the username / email adress you received.
Click on Next.
Enter the password you received and click on Sign in.
You will be asked to update (same as change) your password.
Enter the password you received in the first field Old password.
Enter the new password in the other two fields – New password and Confirm new password.
You can view the password requirements here.
Click on Submit.
If the password is changed successfully, you will get no feedback. Instead you will be presented with a window where you can enter the new password and click on Sign in.
When you see More information required, you will be asked to enable multi-factor authentication (MFA), please see these guides.