HitBTC are KYC scammers. Basically, they wait until you build up a balance on your account, then they freeze your withdrawals and ask you to provide all sorts of information. Their hope is that you cannot provide the information, or they put you through so many hoops that you give up.
Their KYC system is not used on any other regulated exchanges. Meaning it's completely fabricated by them; fabricated to be deliberately confusing and difficult.