If you are seeing a "Server Unavailable" message after extracting your zip file, it is often because the game is trying to verify files against a non-existent EA server.
You are not alone. Due to the age of FIFA 16 (released in 2015) and the shutdown of many official legacy servers, players increasingly rely on third-party server archives. These files are notoriously prone to corruption. fix server fifa 16 zip file download