i logged on to the server and it said i was a guest, i have filled out the application and i dont know why it is doing this please help, thank you
You haven't been accepted yet, so you've either been declined or they haven't got round to looking at your application, be patient.
Looks like your application was accepted, and you are already a member. Are you sure you went to /warp pvp and /warp peaceful to start building? As you cannot build in the main world you spawn in.