Post rewards are not paid instantly , about 24hours after, sometimes more. By looking at your wallet right now, you did get paid for that big post, 3 hours ago, or 14 hours after you posted this .... The power down feature, is converting Steem Power back into Steem (which can be traded and sold) slowly over the course of two years, in 104 equal weekly payments.
If you need the cash, sell some of your 911 Steem Back Dollars to an exchange for Bitcoins, and you can then sell those for your local currency . (I would suggest trading some for Bitcoins, and some for Steem ... doing SBD -> Steem -> Steem Power is alot faster than using the internal function, which takes 1 week)