After reading FAQ page I am not sure and I can't sind if there are any withdrawal fees when withdrawing Bitcoin, and if they exist than how much is it?
The information about withdrawal fee is available when you are going to withdraw.
So simply click the withdraw button and you'll find the approximate fee
https://prnt.sc/115tq6k It seems that they uses non fixed withdrawal fee so it will always based on the latest network condition when you are going to withdraw.
The website is pretty cool, I really like your theme and layout. The signup procedure seems simple. Also, it's good to have social media signup option so it would be much easier for the new users to get registered on this site.
Also please tell, if there are any terms & conditions for a risk-free bet? Also is there any signup bonus for the new users?