Tabs for Overview, Curriculum and Author have disappeared

I’ve just updated the learnpress plugin and now my course page is not showing tabs for overview, curriculum and author as it used to. The link I’ve given is just one of 6 courses I have on my site. Potential clients now cannot preview the content as they could before.

There’s also no button to ‘Buy Now’ – that also has disappeared. So potential clients can’t actually BUY my courses. I will raise this also in a separate topic.

PLEASE HELP ASAP – THIS IS A MAJOR PROBLEM!

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