Open the download page from your CDKeys.com email and locate your uPlay key. Copy this to your clipboard. If you haven’t yet downloaded the uPlay client, you’ll need to download it from the link here: https://uplay.ubi.com/
Open the uPlay Client and log into your account. From there, click the ""Key"" icon on the top-right.
This opens the ""Activate A Product"" option. Paste in your product key and click ”Activate”.
Once activated, the game will automatically be added to your library, ready to download and enjoy."