Well, I managed to change the launcher language after messing around with it. But after I downloaded the game, I launched the game and noticed that the User Interface (UI) is all in Turkish. Like, duh! I already changed the language to English from the Launcher UI. People who are not native to Turkey cannot read something that seem gibberish to them. At least add English language if it is not there. We aren't asking for other local languages. 

If the language is there, we need a proper guide that explains how to change UI language to English!