Why? I dont understand. I bought it (S2) Installed it, Made an account and i couldn't connect

Either firewall problems, or you're using an old version.

Please check this thread, and ensure that you are using the latest verison of LFS (0.5Y):
http://www.lfsforum.net/showthread.php?t=29454

Now its givingme an error. Missing file ENG at Data/engine

XFG_default

Older version of lfs.

Download the newest version here