You are making an accusation against a site has been running since 2013 and has been paying its users without any problems for these eight years.
Why dont you post some screenshots from your side about the wins you made and that you tried to make a withdrawal? Without providing those this is not even a proper scam accusation thread but a discussion thread about their service.
All cases of when this site has had problems is when the user tried to break something from their ToS. Admit it, you did some thing bad from you side of the story which you are not revealing.
Otherwise post screenshots to validate your claim and PM TheQuin about your problem.