Hello I\'m a newbie!

When I create a new character this message appear : \"You are already logged on to this server. If you were disconnected, please wait 30 seconds and try again\" !
Then when I try to connect to the server with my character an other message appear \"There is an error in the data base ...\"
Whate I have to do?I created more than 5 characters and there was everytime the same response!
thanks

Please if you answer me would you use easy words cause I\'m not english and my english level is not very good!!!