Reducing Windows version from 10 to 7 earlier versions
Sure, let me know how you'd like to proceed!
It seems the most effective method to return to Windows 7 is reaching out to Microsoft.
They won't comply. They've already made clear they won't change the license keys. Keep trying, but don't expect success.
I executed the command now ;=;
There are likely around 50 computers stored in a room, along with 7 spare keys that will never be needed.