Please verify that firstname.lastname@example.org appears as a billing account user on your Google Cloud Billing account. Refer to instructions to add Terra as a user on your Google Cloud Billing account in this article. After you add Terra as a billing account user, you should be able to create a Terra Billing project.
Another reason you may not see your Google Cloud Billing account is that you may have enabled Terra billing permissions for the incorrect Google ID (e.g. Gmail address). This occasionally happens if you have both a professional and a personal Google account, and you are signed into your personal account (not the account used for your Terra user ID) in the browser where you're working.
To switch Google accounts in Chrome
Please be sure to enable Terra billing permissions for the Google ID under which you created your Cloud Billing account. You may need to close your Terra session and/or log out of the incorrect Google account before re-enabling Terra billing permissions.
- In your Chrome browser, sign in to Google.
- On the top right (to the left of the three vertical dots), select your profile image or initial.
- On the menu, select or add the account corresponding to your Terra user ID.