The site let me withdrew a small amount twice. I deposited more capital but after accumulating profits the site did not let me withdraw again. I did the primary certification and the advanced authentication but I still couldn't. I keep on getting the message "Insufficient trading volume". After doing some transactions, I still couldn't withdraw any amount. I contacted customer service and they replied that I have to pay the tax on my profit first before they will let me do some withdrawals. I have to pay tax even if I just want to withdraw the capital that I invested in my account.