Yep. Couldn't open the site either.
Also,
Your balance has been frozen until you make a deposit. Need to make a Deposit in the amount of 0.01 BTC. After payment of the deposit your account will be automatically activated."
This message is very familiar. Ponzi scheme sites always use statements like these when people who hasn't done a deposit is trying to withdraw.
Maybe tell us a bit on what cryptonbnb is to start with?

The website is active, but we don't know what happened with Op. From my view it is completely a scam, the active traders count is the same for a longer time. I've checked it several times, it is the same till now.
Was just taking a quick nap, took some time before anybody started to comment here;
I found out that the website redirected some chat feeds from a csgo gambling website, so it's confirmed a scam as I would not expect a legit site to make traffic false chat traffic like that.
Should I just delete this thread or where to list sites that has something to do with scams, so others can find this site via a google search and atleast get a scam warning?