Download link here.
WARNING: The license key provided will work on Windows. For Mac, iOS, and Android you may need to use the Activation code instead in your Avast account at https://id.avast.com which is created once the license key is activated in Windows. If you do not have a Windows computer, please contact the seller using G2A Conversations who will be able to register this license key for you and provide you with the Activation code that may be required for Mac, iOS and Android activation.