When you configure a Google Analytics data extraction in the Sciylana UI you delegate permanent read access to Scitylana for doing queries agains the Google Analytics API when you are offline. This is necessary since we process data automatically around the clock.
The Scitylana delegated API access flow follows Googles official guidelines. Scitylana is an officially approved and validated Google App.
At any time you can disconnect and revoke the delegated read access access. There is no way for Scitylana to access your data after revoke access.