Damn - thats even more of a worry.. This is pretty much happened with bit-mining.co and some other websites that went dead on me.. these weird problems where they wouldnt pay out (simply because their wallet was empty) and support getting increasingly slow to respond, then bang it all disappeared along with my btc...
If they are a member of the bitcoin foundation - I wonder if we can lodge a complaint with them?? I guess we need to give them more time first.
I might post a link to this discussion on twitter and hope they respond