Once you have setup Firebase Analytics exports to BigQuery, kindly follow the steps below to setup Requirement 2. Grant access to Service Account.

1. Go to Google Cloud Console

2. In the dropdown on above, you will need to select the right project associated with the Firebase project for your game. Then click "Grant Access".

3. Paste the Google Service Account email into "New Principals".

4. Assign this 3 roles and click "Save".

5. Go to Cost Center > Data Connectors after 5 mins, click on the "Refresh" icon.