I was recently working on rebooting one of my roleplays, P.R.C.U. when I punched some of the key phrases designed by me into Google. Well upon doing this I stumbled upon a identical copy of the RP on another website (which I will opt not to name/link until receiving advice). The problem is that the RP is GM'd by someone else who never approached me for permission nor even gave me credit and claimed all the work as their own. I've contacted this person and asked them to stop using my work and that if they really wanted a superhuman school RP it wouldn't be hard to change their RP to an X-Men based one or even just modify the details to make their own universe. They've since argued that because they've been playing in my universe so long and attached their own plot to it that they therefore now have the right to continue and should be left alone. Furthermore I should note that the GM also took one of my player's characters and one of my own as theirs. I obviously disagree with all of this and while I have contacted the site's Admins, I have heard no reply and I'm assuming my account was reported as it is currently suspended. So I'm not quite sure where to go from here, obviously I'm still waiting to here from the admins (who should be replying to my email not an account based PM by the way). But what I'm really wondering is, am I in the right to be asking these people to stop or should I be flattered someone took the world I built and continued to RP with it?