License Problem on New OS

I had Harmony optimally when I had Windows 10, then suddenly Windows 10 did what it does best, and nearly eradicated my hard drive. I reinstalled Windows 7, but now I can’t get Harmony working because it is saying that I have already installed the license. The license wizard doesn’t seem to be addressing my issue as I cannot locate the initial license and “return it” as that license is lost on a faulty partition. Is there another way I can get this license active again?