Sure your balance is 0 as there is no free giveaway there IIRC, above users are talking about the deposit bonus not about free bonus without deposit. The latest promotion is free 2mbtc with deposit at least 2mbtc, so basically you can deposit 2mbtc then you will get additional 2mbtc (I'm not sure if new players are eligible for this). If you are hoping to get free coins without deposit then you should, then stop your hope because you wont get it since it will force the site to spend too much money as their minimum bet is 25k satoshi.
I think he's referring to the affiliate/ faucet feature.
I too understand that he doesn't talk about the affiliate one, he talks about the bonus and he thought that bonus was given like a faucet whereas this 2 mbtc specific bonus is for people who deposit money, if you deposit 2 mbtc you get another 2 mbtc (there could be some rules that apply to withdraw it), so when you register you do not get anything, there is no registration bonus given right now.
So, the guy that said "just received your email" thingy that asked if there is welcome offer means that if there is any bonus for depositing, the guy under that who said "seems no welcome offer" thought that was a welcome offer for free like a faucet or something that basically gave you free money to test the games when you first register, the deposit bonus is true, the welcome bonus doesn't exist.
