Hello, Michael. You're in luck. I still have the original message in which the link was provided. Here it is.

https://www.codefactoryglobal.com/downloads/installers/codefactory-py3-1.0.nvda-addon

All you have to do is download and install the add-on, re-enter your license activation key, and download the voices you want. You should then be good to go.