Same type of thing happens with monthly too. You get es pts for payments being successfully paid but if you request a payment on say 11/26 receive it 11/29 and it's not marked paid to after 12/1 you don't receive any pts for it. They don't add pts to the previous months score and it doesn't count towards the current month.
I think whenever it's marked paid you should get the pts even if it was requested the previous month. It takes them a week to pay then another few days to mark as paid. If you request often every month your losing out on pts from a few redemptions.