You can download 2.0.0 here. You may need to uninstall before installing 2.0.0 and you will still get update messages.
Windows: https://topazlabs.s3.amazonaws.com/deploy/TopazDeNoiseAI/2.0.0/TopazDeNoiseAI-2.0.0-windows-x64-Online-Installer.exe
Mac: https://topazlabs.s3.amazonaws.com/deploy/TopazDeNoiseAI/2.0.0/TopazDeNoiseAI-2.0.0-osx-Online-Installer.dmg
