Every calculator I can find, as well as my own calculations, say that it should be 1.7 etc per day per 500 MH/s. Yet yours is showing 1.3. That's a big difference.
And what happened to your "no fee forever" announcement? The pool itself says 1% fee??
Yeah I changed the Reward System to PPS, because miners dont like PPLNS on small pools. so many miners left of bad luck times.
Now your reward is not pool luck depended.