Players online, resource-status and live sync tell you more than just 'server online' in the server list. This is what Meosify tracks.
The Meosify overview shows live connection via WebSocket, not via the public FiveM API. So you only see data that actually comes from your resource.
Players online, max slots and the player list update as soon as the resource pings. Resources appear as soon as they are registered.
Combine this with structured logs and MEOS for a complete picture of your community server.