Hello there. Basically, I have a physical copy of the archon edition for Tyranny, and I wanted to have it on GOG rather to Steam and support the platform, but when I was finally redeeming the code it says it doesn't look like one of the site and asks me to look if I'm typing it wrong. It's a AAAA-BBBB-CCCC type, so there is not much fail to make there and it's the only one. Do I seriously have a Steam only thing?.