For the past week or so, I've been mining ETH on Suprnova and have been patiently waiting for my Confirmed Earnings to reach 0.01 ETH as to reach the minimum for payout. Yesterday evening, it was at 0.0099 so I figured that one more found block would put me over that lower limit.

When I woke up this morning, I was delighted to see that in fact 4 more blocks were found overnight. But strangly, this was not reflected in my earnings. Unconfirmed Earnings was zero and my Confirmed Earnings had actually dropped to 0.0085 ETH! So not only wasn't I rewarded for the 4 new blocks found, 0.0014 ETH had disappeared from my Confirmed Earnings!

So can anyone please explain what's going on here?