Disconnect from server

Every time i try to even log into the game i type my username and my pass and it loads for a bit and says disconnected from server then i keep trying and trying and it keeps on saying the same thing and from time to time it might log me in and let me create a char after i try that it disconnects again please why is this and issue for such an old game i really want to try this game out for real fix it people !!! HELP HELP HELP