They always adjust their free roll lucky number payout depending on bitcoin price. It has happened always and know that this situation will change if the bitcoin price goes down. For people with a lot of referrals and who like to collect coins for the long term it is better the bitcoin price to be down.
Please, read the OP
and the thread and you'll see that it was not the case. Their minimum payout has always been exactly $0.002 worth of Bitcoin and OP is saying about $0.001.