It gave me the following error:

The product code you've entered has already been activated by a different Steam account. This code cannot be used again. Please contact the retailer or online seller where the code was purchased for assistance.

I have other keys you can try. I'm guessing some old bundles have been revoked, unfortunately. I'll modify the key given and we can keep trying - hopefully one works for you.

Thx for the quick response. The new one didnt work either. (NTB ending)