Nitrogen blocked my country IP and ask to send them an email and contact them in order to make an exception and to log in with my country IP.
As for sportsbet I know I can safely deposit and safely withdraw up to 0.10 btc without the need for KYC, above this amount they can ask for KYC but maybe they don't. Anyway I like their cashout options just like bet365 and so far never had any problem with them.
I would feel very unformfortable giving these sketchy offshore bitcoin sportsbooks sensitive identity documents if that's what they're going to ask from me (don't know yet because no response yet). It's been proven that sensitive info isn't even completely safe with banks. How safe can your documents be in the hands of these guys? The point of playing on bitcoin sportsbooks is to remain anonymous since anonymity is a main bitcoin and blockchain theme. And this is the only bitcoin sportsbook I've ever heard of that does this KYC crap. Plus with stuff like Cambridge Analytica, online privacy is a huge concern right now.