Load more button bar has disappeard

Hello.

Can someone tell me why the load more button is not show at the bottom of the event boxes on this page? I have this in the shortcode

[events per_page=”16″ orderby=”_event_start_date”]

There are 252 live events.. so after it shows the 16 boxes the load more button should show at the bottom but it has gone missing.

How do I fix this?

The page I need help with: [log in to see the link]