There's no reason to believe at this point that a takedown occurred, or any other legal problem - because the nginx webserver is running, and the sli.mg domain still points to it. The problem is that the website isn't finding a default page, or any other page for that matter. Explanation: when you go to a website, the webserver (nginx in this case) goes to a folder on the server's drive and tries to find the file you asked for. If the file isn't there, you get a 404 error. Since we're getting 404 errors for every page, that means all the files for the website are no longer visible to the nginx webserver, or nginx is looking in the wrong place. Likely causes would be the file system hosting the public html folder got unmounted, or a tech goofed up and hosed the nginx config file.