Server check problem

after i turn on pyro with dxwnd and i click play on the maplestory ad thingy and after gamegaurd comes up a box that says "unable to login to the server. either u are not connected or maplestory is going through a server check"this happens and i cant go into pyro until 30minutes later when i try for like the 100th time and i manage to get in

It is because the server is offline due to excess amount of people, they are updating, or that the person who is hosting the server has disconnected. ~cheers