Ya it's strange that I keep seeing people posting about this website and saying it's problematic, the only thing is the people who keep posting about in general are newbie accounts with no track record, so very hard to tell what's going on.

The sportsbet.io owner did respond on several occassions as I can see, and seems to be a victim of double spending cheaters. But yeah, no proof means we have to assume innocence until proven guilty. That's how things work.