Mine is still connected to the server, and payout are there. Are you sure that your config is fine. Share are checked by the server and may be rejected if something is wrong.
Yeah my config is correct (you can see it in the image) and I'm getting accepted shares.
In that case the payout will be available with the next mined block. After some time, it will appear in the wallet. P2pool takes some times, but you get money as soon as the mined coin is ready.
However this is a PPLNS p2pool too, and to get a payout we have to stay a few rounds (http://pool-x.eu/aboutpplns). Once done everything is fine.