I look at shifts and blocks and I don't really understand it. Right now the last ten shifts say "Paying Now" under shifts, but it's been saying that for the past few blocks found and nothing has been paid. Now this might be totally normal, the problem is, I have no idea. Am I being paid for the work I'm doing? It's really weird.
The pool is Pay Per Last 10 Shifts. Each time we find a block, you get paid your portion of the reward, based on your work over the last 10 shifts. As a result, the most recent 10 shifts are still open for payment - when we find the next block (hopefully really soon - as I write this, we last found one 2d and 20h ago), you get paid your share based on your work over the last 10 shifts.
If we find more blocks in that 10-shift period than average, you make out like a bandit. If we have a really long block, you will have some shifts that have 0 pay. In the end, if your mining is constant, the luck averages out.
If you're (like me) mining at an inconsistent rate (I rent out my miners to others and use payments in altcoins to fund buying mining power from others), you may miss out on some runs of good luck putting in a large amount of work during a shift that ultimately doesn't make anything, or you might hit a run of good luck and do really well.