Just want to say I've hit the minimum withdrawable amount of 0.002 BTC today and have already received my first withdrawal.
Thanks Cryptomine!
And I have also found that there seems to have a character limit for the transaction PIN. If I set it to 6 digits, the system said "Transaction PIN is invalid" when I tried to withdraw. I had to change it to 4 digits for the transaction PIN to pass through.
This should be another area that can be improved later on.