How to link to Steam? After downloading the game and launching it, you will be prompted to link your account. If you missed this prompt, you can go to https://accounts.theorycraftgames.com/ to link your account manually.

That said, please note that Steam can only be linked to one account. Unlinking will not mean you will be able to link your Steam account to another. If you need your account manually unlinked, please contact support by creating a ticket.