It sounds like you're having trouble with the game connecting to Steam for multiplayer. Even though you're signed in and online, there could be issues with the game’s Steam integration or your network settings.
You might want to try restarting both the game and Steam, checking for any updates, or verifying your firewall settings to ensure nothing is blocking the connection. If the problem persists, reaching out to the game's support team might be your best bet. suika game