I marked the question as answered, judging from the "correct answer" tag placed on each of two responses. They both, however, fall short -- at least I can't make it work. kclad: When I go to my account there is no option to "add" anything. If I try "manage your account" I'm taken out of Adobe and sent to Amazon. Then I have to log in again to Adobe. I couldn't go from Amazon back.
Wright: My original post says "Have LightRoom CC up and running" so no, I don't need info on how to open it.
I think I might know a partial answer. Somewhere I think I read that subscription memberships do not need to post a serial number. If that's true then maybe I don't need to be concerned that it is listed. Still, if Photoshop is listed, why isn't LR?