Firebase iOS Swift codelab out of sync with Firebase Console

In step 5, the instructions say, "From within the Database section of Firebase console select the RULES tab." When I select the Database section in the console, I get a set of services. I had to click on the Cloud Firestore service to get to the Database section that has a Rules tab. In the meantime, a dialog titled Security Rules for Cloud Firestore popped up, along with the small print message "Enabling Cloud Firestore will preclude you from using Cloud Datastore with this project, notably from the associated App Engine app." The codelab uses Realtime Database rather than Cloud Firestore, so that may be a potential pitfall.