-snip-
It's only for "US" customers.
So, that's the reason why they're not promoting this one because most the time people are focused on global site not in 'US' site. They created 2 virtual coin for US player, "Gold Coins & Stake Cash"
The different these 2 virtual coin:
Gold Coins are a virtual token currency that has no monetary value and they cannot be redeemed for any value whatsoever. They can only be used for entertainment. Gold Coins are not in any way redeemable, refundable or exchangeable for any other currency.
Stake Cash is another virtual token currency that we have on the website, and it has no monetary value either. It cannot be purchased, it can only be obtained through free, promotional offers. Stake Cash can also be redeemed as a prize in a form of a crypto.