Carlos spicyweiner

Hey guys, so I bought arma2 and arma combined operations on steam and it said it was gonna come with dayz but every time I try to join a server it loads the servers welcome messege, and then says battleye initialized v 1.69 then it says (Alex you can not play/ edit this mission because it uses downloadable content that has been deleted. Brg. africa[ map name ] dayz code weapons vehicles and others.) can u help? Thanks - Carlos