Then, the question about how someone wins a prize in the form of an item such as an iPhone has already been asked by someone under your post so I don't need to ask again.
1st possibility is the casino allow the players to exchange the physical prize into credit or money, and the 2nd possibility is the casino do not allow it which means that the winner should give the address to receive the prize.
We still don't know the first and second possibilities before OP answers here because OP was last active on October 31.
I have no idea about the term in coins.game about this physical prize but I guess they are friendly enough so I think the winner can ask to exchange the physical prize into money.
If the winner can or can request to exchange a physical prize such as an iPhone in the form of USDT or BTC according to the price of the item, something is desired rather than sending the winner's whereabouts address.