You only get paid once a day and only for the coins they have actually traded for you. Any still untraded gets rolled over to tomorrows payment.
I didn't get paid at all (45 hours after starting and counting), and my balance on the site has not changed since I stopped mining, still 0.009 for 35 hours of 2MH/s.
I can't speak on the "no payout" part yet tbh. Still waiting, patiently, for mine. But the balance issue is highlighted on the main/front page of the statistics page on
https://hashco.ws/stats/. And if you are too lazy to click the link and read it, here it is copy and pasted for you;
"Note: Estimated Unexchanged and Confirmed Exchanged numbers are not currently functional. Please don't be alarmed that these two numbers remain 0 throughout the day. You'll still be credited your full earnings at daily payout. This is one of our top items to get implemented, and you should see it soon. Thank you for your patience."