Before the refund you must make pending payment from this morning.
I need 0.239 BTC to paid 1JQ4 and I have 0.231 BTC (and with my 1% fees they are 0.189 BTC available).
And if I did that there are no BTC to refund people... But there is a refund system, and I try to keep some BTC to refund people when the round is over.