Hmm, it seems that your device isn’t compatible.
The Liberate companion app is only available on iOS and Android devices.
The Liberate companion app is used to
You can setup the Liberate companion app on any compatible device, it doesn’t need to be the mobile device using the associated SIM card, but you will need access to that device in order to login to the app.
You may wish to use another mobile device to setup your Liberate service. You won’t have access to the features from the phone, but it will allow you to setup and go.
Find out more about Liberate http://www.telstra.com.au/liberate