I think they're not scam. But I found an issue on their payment system and informed them about this. After that they stopped. Maybe they're fixing that and then they will continue. I hope they will.

If they had some issues with the payment system then they should have posted about it on their official thread
No explanation on thread + Locking the thread + No response to customer mails =

I have 600 GHS on BCS, bought 200 GHS just three days ago. Hope they will resume payouts within the next 24 to 48 hours.