Competition in crypto sportsbook, casino or online gambling is very tight, and many new bookmakers have emerged who with all their differences, if Betnomi wants to be the best it takes time and hard work to be able to make it happen, and intense promotion really helps the development of a gambling website
It all comes down to the odds offered primarily in my opinion. If one site consistently offers better odds when compared to the competition, they will definitely attract more punters in the long-term.
i just wondering why the predictor leaderboard all the people points became 0?

It probably has to do something with the last predictor getting cancelled. Try ask their customer support or wait for a response in this thread.