Hey — online still works, but it’s spotty. The Warcraft I & II servers are just really quiet these days, so it can look like multiplayer’s broken when there aren’t any hosted games.
If you’re using the GOG or Battle.net Edition, make sure you’ve got the latest patch and your firewall allows the game. Some players use direct IP connections or community Discords to find matches since public lobbies rarely show up anymore.
If you think it’s a technical issue rather than low activity, you can also post in the Legacy Games Tech Support forum — that’s where players report issues and help each other troubleshoot:
https://us.forums.blizzard.com/en/blizzard/c/legacy-games-tech-support/