For simple CSS blurs, legitimate bypass methods involve using the browser's Developer Tools (F12).
Unfortunately, I couldn't find any official sources offering free license keys for Blurl Link. However, here are a few possibilities: free licence key for blur link
If you've already downloaded a "keygen" or "crack" for Blur, scan your system immediately with Windows Defender (or Malwarebytes Free) and change passwords stored in your browser. For simple CSS blurs, legitimate bypass methods involve