To change your email address and password, please follow the steps in this article:
1. Log in to your Streamline account using your Google account first and click 'Account > My Account.
2. On the "Profile Settings" page, click "Email" and enter your new email address and password.
If you only need to change your password, just click "Password" Enter your current password, and set a new one. Don't forget to click "Set Password".
After saving the changes, please log out and then log back in using your updated email address and password. This will ensure that you can access your Streamline account with the new credentials from now on.