Upgrade license possible?

Hi. I recently did an erase and install. When I reinstalled the version of FlickrExport I had been using (2.0.10 with iPhoto '08/7.0), it didn't work. I downloaded the latest version of FlickrExport and was told that because I purchased the license before Jan 08 I was not eligible for a free upgrade, but could use my original license as a coupon for the paid upgrade rate rather than buying from scratch. However, when I enter my license number (FE-200-6638-9418572ce9807731f33f7910a19bf314) I get the message "We're sorry, the Coupon/Promotional Code you have entered has already been used". To the best of my recollection I never upgraded, and wonder if I am eligible for the upgrade or not.

I really like your products -- I use your exporters for iPhoto and Aperture, as well as Darkslide, and have recommended them to others in the past. However, I can't countenance paying full purchase price for something I've purchased in the past and which was not broken until I reinstalled my OS. I hope you can advise me on how I can keep using the exporter I paid for, or how to obtain the discounted upgrade to a newer version. I would happily continue using the older version that worked fine with my current license until yesterday if no discount is possible.

Thanks for your time,
John Stephens