Sinbad mixer is no longer legitimate, nor does it exist. The service is closed and the domain is seized by authorities.
I think that this information is not crucial, because no matter where they come from, scammers are still scammers.
It's crucial that people remain vigilant and cautious when encountering such websites, ensuring their safety and protecting their crypto assets.
Somehow they persist, even in the face of many proven scams. The authorities prefer to deal with the control of registered businesses rather than those operating under the radar.
I saw in the footer on this page ads from hosting provider ispmanager.com, if the site is hosted by them, maybe you should contact them and warn them about the nature of this user.