I'll bump this onto Latest Posts for you but if you still get no answers you may be better asking d to move it to Q&P or just re-post the question there. There are quite a few people doing the quiz who are regulars in Q&P
I've just realised the first is 7 countries of Central America. From Wikipedia:
" Central America consists of seven countries: Belize, Costa Rica, El Salvador, Guatemala, Honduras, Nicaragua, and Panama."
The Crossword experts have arrived. Morning, Tilly- are you on whilst cooking the bacon and dancing to Radio WM? I'm off to work shortly for a 3/4 day- I don't think I'll ever retire, I'll just keep scaling down my hours slightly