Use the AI2 Companion App: On your Chromebook, install the "MIT AI2 Companion" app from the Google Play Store. You don't need a separate emulator if your Chromebook can run Android apps.
Connect to Your Project:
In App Inventor, go to Connect -> AI Companion.
Open the companion app on your Chromebook and scan the QR code or enter the 6-character code.
Use the Extension:
Make sure you have correctly set up the Client ID and Client Secret for the Google Sign-in extension in your App Inventor project.
The sign-in process should work directly within the AI2 Companion app.
If it doesn't work:
Double-check your Client ID and Client Secret.
As a final test, build the app (APK file) and install it on your Chromebook to ensure all functionalities work as expected.