That was a huge risk, especially with the amount involved.
A huge number of casinos I know prohibit users from the US from using their platforms. By providing your documents that were from the US, you just proved to them that you are a citizen from a country that they banned on their platform. You could try to convince them that you accessed the website from Finland but so could any other person residing in the US whilst using a VPN service.

I just want to know, what was your net profit/loss (deposited amount vs withdrawn amount) like?