There is something fishy with the rules of the blackjack. The rules makes players has bigger chance to lose than normal blackjack. I.e I was stand on 13 but dealer stand on 14. Normally, dealer keep on hitting if the card less than 17. Another weird example, I was with 19 and dealer 18 but dealer hit again. It does not make senses, seems that they have their own blackjack rules.
The other fishy thing is that they locks the thread, it sounds like they do not want to be asked or to be complained about the site. Prefer to stay away.
That fishy thing is called as an algorithm which is made you to loose. :-)
These sites follow the same script. They let you win at certain point but not overtime. Note that you can never make huge earrings from these sites. They are online and over the servers and implemented with advance scripts. They will never ever let the house go down the profits or break even point. This is the rule for their script which we think as fishy stuff.