Winclone 6 requires macOS 10.11+.
Winclone 5 requires macOS 10.9+.
Winclone 4 requires macOS 10.9 or higher including macOS Sierra.
Winclone 3 requires macOS 10.7 or higher including 10.10 Yosemite.

If you wish to purchase Winclone 3, 4, or 5, go ahead and buy Winclone 6 Standard orWinclone 6 Pro.

Then request a license to the earlier version(s) that you need.