Azure Application Insights for Android

Im trying to implemenet app insights in my android app I have tried using this in y Application class

AppCenter.setLogLevel(Log.VERBOSE);
        AppCenter.start((Application) getApplicationContext(), "{df2331b5-fcc9-4c3a-9971-2f4aabad120b}", Analytics.class, Crashes.class);

The response Im getting is

AppCenter: HTTP response status=401 payload={"status":"AppSecretDenied","validDiagnosticsIds":[],"throttledDiagnosticsIds":[],"correlationId":"971eea9b-bce9-40cb-abc0-ee5030a0984f"}

In my Activity im using

 Analytics.trackEvent("Dashboard");