Please take note that your stats on the pool can be a bit confusing.
You can only see your stats while you are actually mining. Furthermore the 360 blocks confirmation time (12-16 hours of mining) creates a delay in your stats which can be confusing. Also the pool pays out 20 ROI per transfer(sometimes a bit more) so if you start mining now, it will take 12-16 hours before your stats even start counting any ROI. As soon as it reaches 20 it will then make a payout. And if you stop mining at this very point, it will keep paying out for another 12-16 hours. The time between payouts is then dependent on your hashrate and the difficulty at the time of mining.
The difficulty changes a lot during a day, so don't expect your payouts to be with the same time interval. It will change during a 24-hour period.
I hope this helped
This is an excellent explanation using plain non-technical words. I learned the same based on what happened after the fork. I am getting coins now too.
If I may, I would like to suggest to dev's and Elbandi to put this under FAQ section, for new miners.
Maybe the pool operator can explain it even better. But I guess the main point to understand is that the stats represent your current hashrate, or more like an estimate. While earnings have a delay of the current block confirmation time.
But of course, feel free to do with it what you want