Yet you all ready revealed the key.

edit: you sure? your sg account doesn't list this in your win list, nor is it in your steam library.
This is "Luxor HD".

Appears bundlestars gave me incorrect steam key, so added correct key, it should work now.

Yes, it was strange for me aswell, but it appears that Luxor HD have the same ID than Luxor, so it markes owned

Ignore it. Now that I've tried the new key it worked! Thanks a lot!