a few days ago I placed a sell order that was wiped out by this guy http://www.blockscan.com/order.aspx?q=3336
assuming that this troll will never pay, I'm not sure what happens in these cases.
If the buyer doesn't process a btcpay, what happens to the xcp placed in the orderbook?
Am I supposed to just wait or am I supposed to cancel my order (if it's possible)?