No South American servers on campaing missions?

A couple of weeks ago i noticed that the ‘‘South America’’ (or something like that) option for private campaing missions was just gone. Now i can’t play without lag, and that just breaks the fun. Are the servers gone? If so, why?

Im from Argentina and i think the reason they were remove was because hardly anyone plays there.
i would recommend setting steam download region to US-New York dont know if you wont have lag but i been playing for quite a while there and i dont have any problems.