This scam, he disappeared with my coins. Do not trust mixers at any time can deceive you. 
Any online service is capable of disappearing over night, but if you need a mixing service research the way Chipmixer works. They provide you with a private key that was created and funded before you made your deposit. Kinda like time travel. Having said that, I would sweep that key immediately to avoid any foul play.
I am still baffled that not one user here has found a way to contact the service.
I don't mean to be a dick, and I'm sorry you suffered a loss, but what baffles me is that anyone would leave their coins in any webwallet, and especially an anonymous mixing service that operates on the onion network. That's just trouble waiting to happen.
Im too suprised that nobody has contact with bitblender admin, of course there is someone in here that knows him!