Using a "Parallels Desktop activation key" from GitHub is almost always a bad idea. These keys are typically shared as "cracks" or bypassed license scripts, which carry significant security and legal risks. Why you should avoid GitHub activation keys
Searching for a “Parallels Desktop activation key on GitHub” is like looking for free money on a public sidewalk – if it seems too good to be true, it’s either fake or dangerous. You won’t find a working, safe key. What you will find is a fast track to malware, revoked licenses, and wasted time. parallels desktop activation key github
Which one would you like?
Support: You can contact Parallels Support if you have proof of purchase but cannot access your license. Using a "Parallels Desktop activation key" from GitHub
Several third-party repositories exist that attempt to extend the use of Parallels without a standard purchase: You won’t find a working, safe key