I also sent a report to this address and received a response with a report number.
I have already sent a report to this address and the manager answered me. Send reports to this address, the more there are, the more attention the company will pay to this site.
I am not sure what they mean when they say that they deactivated the domain. Both xchange(.)cx and stealthex(.)co are still online. The latter is redirecting to the official domain. Only the first one is a phishing site.