I take it they were purchased direct from NamePros (Google Checkout) and not another member via the exchange? If so, its best to send a PM to RJ who can assist you.
Buying NP$ isn't automated at present, so it takes my intervention to deliver them. If I'm online, it's usually within a few minutes. If I'm not, then a bit longer. :]
I was wondering too if it was automated because I purchased some from the NP$ exchange and never received any email or PM telling me how to pay for the NP$. This was about 3 or 4 days ago.
If you're purchasing on the exchange from another member, you will receive an automated PM telling you where to send PayPal payment. If you don't get this, or need help you can PM me.