How old is your channel, and how many subscribers do you have? How many videos do you have on your channel, and how many views has each video received? Just being a network member doesn't guarantee payment. Your videos have to get enough monetized views for YouTube to have something left to send to the network after they take their share of your money, and not every video view will be a monetized one. When you join a network, your revenue earnings are double-dipped; with a cut taken by YouTube; then a second cut taken by the network itself.
Each MCN will also have a payment threshold. Look in your dashboard and see what it says about reaching payment threshold there. If you haven't reached it, then you obviously aren't eligible to be paid yet, and all your emails are for nothing. If there is no payment threshold as they claim, then perhaps you haven't yet earned that $1 I see on their site.