Thanks for getting back to me. Yes, I’ve now worked out it’s an issue with the shortcode. It was:
[my_calendar category=”3,4,5,7,8,9″ format=”calendar” time=”month” above=”nav,jump,” below=”none”]
If I remove “above..” and “below..” it does render the calendar, but not a single month view as it did. Can you advise what I should use to show a single month with no categories below