Maybe they started mining but then the miner overheated and broke, or didn't work, or was unreliable. There are plenty of logical explanations for why they could have stopped mining. They promised a dividend so then a miscalculation. It's not exactly easy to deploy something like this, lets be real.
Ok, let's be real.
They said they were mining on Sep 10:
We're currently averaging about 2 TH/s in solo mode, and expect to deploy at least 4 TH by monday 16, to reach gradually 50 TH within October.
Then again:
We're mining in solo mode
and again:
Not really a drop to 2 TH, this is roughly the speed we're mining at now, it will reach 4 TH next monday.
and again:
We are indeed mining
If you want to be reasonable, how can we trust ANYTHING they say after repeatedly lying to us about something so simple.
But, we now know why they wouldn't post the mining address before, as they said many times they would. They were not mining, and could not get things to work.