Anyone used coindar.com before?

[bitcoinlitcoinbtcltc]

I noticed this website being mentioned on another forum, and it looks interesting.
But I don't know how to purchase their special (a PS4). I have worldcoins/WDC and they seem to accept that among other coins.
Something about coinpayments. Could someone explain where I can create a coinpayments account?

This website; coindar.com

And they talk about payment via coinpayments.
How do I pay?

Anyone experience with paying via coinpayments?