Forum:How to edit the user name?

I just, at last, link this wikia to my facebook. At first it seemed alright. But after I turned off my computor this evening and open it again. I checked my email and there was some sort of confirmation email? which already expired. Whatsoever, I returned to wikia and link (login?) the page to facebook again, but this time my user name appears as "Mrsalendra" ?what the?

I never set a name. And I never use such name, even in facebook. I no longer know who I am now -"-

Any help?