Use an application called "protectionID" and scan the exe to undestand protection type. And, if you bought the game on steam or digital delivery in general, it is not supported here and you can't talk about that.
edit: if you are lazy and you don't want to google:
http://pid.gamecopyworld.com/
donwload it, unpack it, run it --> scan button --> single file --> select artù exe and see the results