Ok, i just tried to withdraw. I haven't try yesterday, but when i tried i also got this

OMG, min withdraw is 5 btc, what does this mean? Are you too scared if people won from faucet OP?
@Sellector, when you won 0.12+
BTC, is it from faucet or from your deposit?
oh it means OP do not want anyone or lets say small players to withdraw their earnings. You are a starter and no one will gamble with much high amount on your site so it will be better to decrease the minimum amount for withdrawal.