I just bought some more to get some qualifying partners, and while I was in there, I saw that there is a list of my older certificates. And it shows the status.

Several I have used; several, of course, I haven't. Such is life.

But the ones I think I "used" all show "not used" in the righthand column. This seems like it must just be a mistake since not a single one shows "used." But I'm tempted to print them out and go again. Maybe I had two and I only used one? Certainly possible, but I'd hate to get caught double-dipping here.

Has anyone tried this? Do they just tell you "no, it's been used" and you just pay in full?