When you visit alumnicode.server2.northernground.net, you're greeted with a 403 Forbidden error and nothing else. The site is inaccessible to both humans and automated tools, which makes it nearly impossible to evaluate. Most legitimate websites, even small ones, have a homepage, some branding, or at least a clear purpose. This one has none of those.
There are no reviews or Trustpilot profiles for this site because there's nothing to review. The domain is not in the Wayback Machine, and the WHOIS record for the subdomain doesn't exist. The server itself is clean on blacklists, but that's the only positive signal.
If you came across a link to this site, it's likely a private server, a staging environment, or a misconfigured page. There's no evidence it's a scam, but also no evidence it's a real business or service. The safest approach is to treat it as a dead end and avoid interacting with it further. If you need the service it was supposed to provide, look for a more established, accessible alternative.