Thanks to all who replied to my previous post.
When I logged on this am I was presented with a form to complete as if I had never used the AB. It was not my intention to ask a question. I filled it in and everything seems OK now. Thanks for the answer to 5d. I've still got a long way to go!
Thanks, Farrwest. I didn't like the sound of having to re-join, I like ane asy life! The puzzle was very satisfying, good fun etc - but it means we'll have a long wait for the next one.