Chnage my unchangable public name

Hello, My name is Mor and recently I joined DesignContest and earned my first bronze medal.

I am pretty new to this field and enjoy this so far!

So now to the point. I have a public name that I didn't choose. I really want to change it to my real name, Mor Haham.

How can I do that? 

Thanks.

Edit: Nevermind, the great support team helped me with that.