The server has had a giant influx of players, to the point where the server is becoming full. During peak times, player count surges to 100 players, meaning nobody else can join. A solution to this would be a queue server, so you wouldn't have to keep trying to join the server all the time. Since I am no expert in servers/queues or whatever, I don't know if this is even possible. Another suggestion is upgrading the server to allow more players. I'm not sure about the limitations of both of these suggestions though.