OK .. so .. further to my posting earlier, it is with great sadness that I now report that I've been had: capacity has ceased producing any revenue very abruptly.

I have emailed their support asking the question as to why and bluntly telling them they are a scam.  I don't expect to get anywhere, but still, will update this thread for the benefit of others if/when I get any form of reply.

So bottom line: looks like everyone's worst fears are confirmed in my misfortune: these bastards are scammers.