I agree, either their software is broken, they are repairing it, and being unresponsive to their contact email for unknown reasons... or everybody screaming scam or alternately vendor failing to deliver agreed services (there may be no malicious intent) is (unfortunately) correct.  

Thanks to all the veterans offering comments.  I'm not expecting rescue.  Apparently none of you are bit-miner.com customers so there's no other first-hand experience with this particular site in the thread yet.  That said I do appreciate your notes about warning signs, and scams you've previously seen come and go.  Some of them I noticed yet decided to proceed and some I didn't.  Like everything in crypto I knew it wasn't a zero-risk play when I started.  

* FYI: The payouts they are crediting my account with are in line with what their terms & conditions promise and the historical stats they have published.  There's no hyperbolic promising the moon of profits that would scream scam in advance.  All functions of their site except the withdrawal function are working as expected.
* I am also mining with ASIC and GPU machines -- just the risk of lost income due to hardware failure is greater with a small # of machines, which makes the concept of ownership interest in a large pool of machines as part of a diversified strategy interesting.  
* I looked at the bitminer.io site that people are mentioning here and has had a lot of discussion on bitcointalk ... but it appears to be a completely different and unrelated operation.

I'll update the thread if/when there is new info.