If you came across post-fl-whatapp.hl.cn, you probably noticed the domain name looks like a misspelling of WhatsApp. That alone is a red flag, but the real problem is what happens when you visit: the site immediately redirects to Yahoo Hong Kong, with no content of its own. Legitimate businesses don't build a brand new domain just to send you somewhere else.
This domain was registered only two days ago, and there's no record of it in the Wayback Machine or any other web archive. The hosting is in Moldova, and the server still accepts outdated TLS versions that most browsers dropped years ago. The whois shows a Chinese registrant, but the email is a free account. All of this adds up to a site that was likely set up quickly for a short-term purpose — often phishing, click fraud, or a redirect to a malicious download.
There are no post-fl-whatapp.hl.cn reviews because there's nothing to review. The site doesn't offer a product, service, or information. My advice: don't visit it. If you're looking for WhatsApp-related tools, stick to the official site or well-known alternatives. This domain is best treated as a scam risk until proven otherwise.