private void InitConnectToGoogleStore() { try { var key = Xamarin.InAppBilling.Utilities.Security.Unify(new[] { GetNumberString(3), GetNumberString(6), GetNumberString(1), GetNumberString(4), GetNumberString(2), GetNumberString(7), GetNumberString(0), GetNumberString(5) }, new[] { 0, 1, 2, 3, 4, 5, 6, 7 }); _serviceConnection = new InAppBillingServiceConnection(this, key); _serviceConnection.BindErrors(); _serviceConnection.OnConnected += _serviceConnection_OnConnected; } catch (Exception exception) { GaService.TrackAppException(this.Class.Name, "InitConnectToGoogleStore", exception, false); } }