Congratulations!
Just for information. Have you ever deposited XLM there? If yes. Chill man. But if you don't, Your withdrawal might get rejected. BC game becomes a nightmare for gamblers nowadays.
~snip
They clearly mentioned that your accounts need to have a deposit. Deposit>Play>Profit, After that you can make a withdrawal request.

No I haven't deposited any XLM on BC.GAME but I have made BTC and TRX deposit on the site earlier.
And it makes sense to have at least 1 deposit before being able to withdraw so that abusers don't benefit from the site.
I have been a regular gambler on BC.GAME and so far I haven't faced any kind of issues with the site.