Once you have the installer link and your legacy key, here is how to bypass the dead online activation.
Community archives and sites like the Internet Archive frequently host older versions of the game bundled with pre-applied patches or crack executables that have severed the need for a key entirely. Disclaimer:
Even if you possess a 100% legal, unused CD key from an old physical boxed copy of the game, entering it into the prompt will often fail or time out because the game cannot reach the server to verify it. No Official Support: