You need to grant some permissions for Statsig from your Google Cloud console in order for us to access your BigQuery data.
In your BigQuery’s IAM & Admin settings, add the Statsig service account you copied in the Statsig Console as a new principal for your project, and give it the following roles:
BigQuery User
Navigate to your BigQuery SQL Workspace, choose the dataset, click on ”+ Sharing” -> “Permissions” -> “Add Principal” to give the same Statsig service account “BigQuery Data Viewer” role on the dataset.
Now the service account should have the required permissions to export data from this dataset.