Hello abu91
Welcome on the PokerStrategy forum
You can always change you’re nickname on the
PokerStars page. If you have followed the steps on this page you see on the bottom of the page you’re wrong nickname and than you can change it if you click on the ‘change’ button.
I expect this should be clear enough, but if you have still problems with changing you’re nickname don’t hesitate to ask it.
Cheers,
SDK1987