Quick question for miners on Kano.is ...

I pointed 1 of my new S9s to Kano ..to try out this pool.  I get that it takes 5 days to ramp ... but for some reason, i only got 1 reward so far (on my 2nd day only), at 0.00100987 btc.  day 3, 4 and 5 I had zero reward/payout.

Can someone elaborate why this is the case?  I thought it would ramp consistently, and get sequentially more each day over the 1st 5 days.

At the current rate, if this persists, i'm not gonna point my other S9s ... cos im getting pretty consistent 0.0018 on slushpool and 0.002 on antpool per S9.

Any help would be much appreciated!