better yet would be a past subscriber's address is remembered, and sent to a Profile or History page.

I just checked: ironically I can still look up my Pro page, but the support button just kicks me to the free download page. I think I'm due to renew, IIRC. If so, I'll await a "renew" email, since I don't think I've ever received one for may last 4 Pros.

Go figure. Still some bugs to be worked out there