If your wodering how to delete what things your building,like t cube things,click them and press the delete button onkeyboard. that what i do

Hello,im Matthew Rush - Ingame Name:Skullkid169 I have issues connecting tomain server or others,it will say Attempting to connect like 4 times then say cannot connect to server. :( And i tried the IP's posted i forums andit says tere Hot is unknown and will say Servewon't respond. If you can help i...