Be careful, Sportsbet.io is stealing money from its customers without any proper explanation or reason. I created an account, made a deposit of about 0.35BTC, placed a few bets, won and had 0.654BTC in my account, a few days later I decided to withdraw my money but my withdrawal was declined, because I had to verify my identity. After I did so by sending all the required documents, sportsbet.io wrote me an email that my account will be frozen and they won't give me my money, as I had opened more than 1 account, however, I hadn't done so. I have only one account and asked them to explain in more details and got an answer that they wouldn't tell me anything more about my case. Moreover, they made me wait for about 10 days just to tell me they are going to steal my money from me. 
I couldn't imagine that sportsbet.io works money by stealing money from its customers. I guess this is the worst betting site, so be careful.