The sites fulfills the promise by giving a new account that has got the game purchased. I expected digital code for the game so that I can download it on my profile. To play the game I have to setup new account and only on that that account I can play that game. I am not sure how safe is this method of purchasing ps4 games. Also I wont be able to download any DLCs for the game on this new account.
you can also play using your own personal account , just activate Surge 2 account following steps.