If you buy a used Dell Optiplex or Lenovo ThinkCentre on eBay ($50), it usually comes with a legitimate, embedded Windows 10 Pro OEM license. That is a real OEM unlock, legally purchased.
The Bitly link doesn't lead to a tool at all. It leads to a website claiming "Your system has 5 viruses" or "OEM License failed – Call this number." That number is a tech support scam who will charge you $300 to "fix" a problem that doesn't exist. bitly oemunlock free
Let’s be clear: Using "OEM unlock" tools to bypass paid software activation is . If you buy a used Dell Optiplex or