Bitfinex doesn't accept new users anymore. Just try to sign up for a new account, and you'll see a notification pop up where they explain why they don't accept new users anymore. They'll open up again by January 15th they say.

Great thing for people is that Bitstamp, Gemini and GDAX are still allowing people to sign up. These are probably the most trustworthy exchanges in the industry, and they are still open for business.

Who wants to sign up at a stinking exchange as Bitfinex when you can sign up at one of the aforementioned exchanges? The only question for now remains how long before they halt new user registrations too......