I checked the post and the scam accusation and it looks like you deleted posts of those who were seeking answers. This was very easy to resolve. Provide evidence that you didn't scam. Like Provide a Tx id of payment of some user who said that he deposited the amount you asked but was unable to withdraw.
Then professionally talk to the people who left you negative feedback and maybe they can change it. However, it's no guarantee. Different people have different views especially when you started leaving retaliatory feedback.

If you care about your reputation, then it should not be a hard thing to do... Be transparent.

I personally noticed that your website is a copy paste of very many casinos out there. Not even a single word was changed. Something that makes it suspicious.

Otherwise you can't just remove a flag.