Cant join dayz severs. please help!

[Findouse 0]

So i just got dayz and want to start playing but cant, this is whats going on.

So i try to join a server, a Dayz Epoch sever and it loads but then it says this: You can not play/edit this mission; it depends on downloadable content that has been deleted;

then it states all of the things that are missing. I dont know what to do.

I tried joining other severs that arent epoch  and they dont work.

thanks for your help!.