Reactivate - used license

I have installed HTML Executable ver 4.9 on Windows on my Mac. Last night, I can’t use the Windows, looks like it’s broken. Therefore, I must re-install Windows. I cannot deactivate my HTML Executable activation code because of the windows damage. As we know, we can use 3 activation code for 3 computers. I have lost 1 by the same case, therefore now I only have one. Can I get help to REACTIVATE my activation code that I’ve been used before?

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