Decrypt Crashplan Home Backup files Stored on External Drive with "Plan C" software

I have used Crashplan Home for years (Backup software by Code42). Crashplan Home stopped their service last month. Without being able to access their encryption/decryption servers, I have lots of stored backups that are unreadable as they are encrypted and there is no "key" locally. Code42 can not help as the servers and the keys are now gone. I had an important hard drive fail, and I need to access the backups, even if the data is stale/old; I don't know if it was backing up as designed through the Oct 22nd date? Plan C - [[login to view URL]] : a program on GitHub (GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together; according to their website) claims they have worked out a way, to restore CrashPlan Home Backups. The program cannot run on Windows though, according to the page but can get the Windows files. I am looking for a programmer who: a) knows what the "Plan C" on GitHub even is and how to use it (or even improve it if you run into issues?), b) can run the program; according to the website its Supported environment: Plan C is only supported on POSIX environments like macOS and Linux. Backups of Windows computers can be restored, but Plan C itself cannot run on Windows. and c) be able to decrypt the files on my backup drive, or provide me a way to decrypt them, so I can find the lost critical files and move them over to the off-site computer. I am hoping this is a no-brainer for someone.