The site have been closed since yesterday and customers are unable to bet nor access there account.
bellow is what on there sites

Official Statement:
Just like so many market-leading global organisations, Bet9ja recently became a victim of a sophisticated criminal cyber-attack, which is restricting your access to our platform.

We take this matter extremely seriously. Our priority is protecting our customers and you have our assurances that your accounts and all your funds are safe.

We appreciate your patience and understanding at this difficult time.

We will be back stronger as soon as is technically possible, rewarding you with a truly sensational bonanza of promotions.

Team Bet9ja