I recently requested approval for summary cards on my domain http://www.eat-anglia.co.uk/ - and got the approval email very quickly afterwards (thanks!).
I’ve tested all the cards used at different points in the site (the general site has one, and each blog adds extra data). See:
They all validate ok in the tool.
However, the cards aren’t yet appearing - is there a delay between approval and actual implementation? Could you let me know when they might start showing up.