I've lost my key and most likely the email associated with it. How do I get my key back?

I've in the past spent money twice, but as a community veteran, I do not feel I should have to pay once again for a key I've bought twice already.

Is there a method to restore my purchase.

I had a Com license.

I've also been a member for over a decade and for better or worse have been a substantial contributor and advocate.