My server is not working

my server is not letting me in it because eairlier i put it on private so me friend would not join and destroy me world because he does do that to peoples world the when i closed out of it i still had it on private now it wont let me in and i refreshed my page sloesed it out and tryed again but it still wont let me in my world and the world is sky block and my world is cally My_world