Wow, did I really manage to type "siwnloassd" instead of "downloaded"? I can't even blame auto-correct!
We've had a delay for GRFS, which is not available yet in the Uplay Shop. I've just been told that it should go up very soon (next week, could be earlier), after which the option to download the game via the Uplay Client will be available. Sorry for this inconvenience: our plan is of course to have this option available on release day for all upcoming games.
As the GRFS thumbnail shows on the picture you've attached, I believe you've already installed the game on another computer? If you don't have the .exe anymore and are eager to play on this computer, I recommend that you contact Support with your situation and they will help you out.