There are some servers I see on the server list without a ping. The ping shows up as ---. Yet upon refreshing the server list, I see the player count and brick count in one of those server changing. When I try to join a server like this it just says "Sending punch packet..." over and over and I can't join. Normally I'd say there's something wrong with the server itself. But again when I refresh, the player and brick count changes. So other people are in it.
What does it mean? Can I fix it?