Websites that claim to host working activation keys, "cracks," or "key generators" (keygens) are primary breeding grounds for malware. To download the promised key, these sites often force you to disable your antivirus software or download an executable file (.exe or .dmg). Once opened, these files can install ransomware, locking your files permanently—the exact opposite of what you want when trying to recover data. 2. Identity Theft and Spyware
If the computer containing your lost data must remain offline to prevent automatic updates or web background writes from overwriting your deleted sectors, follow the secure offline transfer procedure: Enter your purchased PRO license key into the offline app.
So, the user might have found this key somewhere and wants to know if it's valid. But I can't confirm that. Also, using an incorrect key might not work, or maybe it's a fake. Should explain the risks of using invalid keys, like not getting support or updates.