For those who are still waiting for BTC payouts I have an information from VIP assistance service:

...
"Long story short, of course, I have requested feedback from IT already.

They payouts have been sent.

At the moment the mempool is flooded. There is quite a large "waiting list". The only thing is to wait and be patient. IT confirmed that the payouts have been sent and I checked your account as well as others and some have received the payout for 2017-12-18 but all with a huge delay." ...