I haven't used TMG in many years and now have a new computer. I found the download of 8.08 which I have the license for and installed it on my new computer. I have the original email with all the required information and successfully activated it and can use the product with my old project.
One problem - the email I had to give it was my old email that I no longer use. Is there any way to change that original email to my current one if I ever have to re-install the product? I have updated my email on this site.