Thanks for the effort gentlemen. Yes, I have a paying subscription, a package called Photography. Unfortunately, the screen I get when checking My Orders does not offer me the possibility to see the Downloads and Serial Numbers at all. Why do I get a different screen? Unexplained mysteries, kind of like the electrical problems on my old Italian m/c.
The following link is about rolling back to a previous version, sort of works as a bit of info on how to install a later version than current. BUT, I suspect Adobe has altered this to nothing older than v8 (not El CAP happy)