I'm almost certain Amazon should provide you the key. Either in an email or their website. I believe that it is only with Steam that the key is linked in with the installer.
That is what I was thinking as well, I am also trying to figure out if they send a legit CD Key, or if it is a special key that only works with their installer. Often times those keys will work when activating other copies of the game, like using it to activate a retail CD copy. I can't actually download through Amazon, as their downloader will not connect to their servers for me. Their tech team (and their lead tech) couldn't find the problem. So if I bought through them, I'd have to use a CD copy to install/activate, but I don't know if that works.
"Invalid CD Key" Op Arrow, from Amazon
in ARMA 2 & OA - TROUBLESHOOTING
Posted
That is what I was thinking as well, I am also trying to figure out if they send a legit CD Key, or if it is a special key that only works with their installer. Often times those keys will work when activating other copies of the game, like using it to activate a retail CD copy. I can't actually download through Amazon, as their downloader will not connect to their servers for me. Their tech team (and their lead tech) couldn't find the problem. So if I bought through them, I'd have to use a CD copy to install/activate, but I don't know if that works.