The only negative feedback is about their odds. They advertise that they offers the best odds but in fact it is not the best at all. Imo, their low odds has recovered by their great promotion every month.
It will cut all speculation of angry bettors who are comparing odds of every event. At this time I doubt there is a sportsbook offering universally the best odds on every bet, is it?
Where do they advertise that they have the best offers? IIRC, there once was a time when the title of this thread claimed that sportsbet.io had the best odds, but now they've changed the thread name.