Hi,

You could update the AV to the latest version (17.8.2318) and there should be a new Cleanup included.
If you already have a Cleanup license you will get a completely new Cleanup application with a separate UI and a lot more options than it used to be in AV module.

If the update to the latest AV won’t work, you could download the new Cleanup here: https://www.avast.com/download-software and install it manually. The Cleanup license you have entered in the AV will be automatically reused during the installation process.

Best regards!