Cant see custom menu on specific page

Hi there,

after upgrade my clients site to the professional, I attempted to change the mobile menu for a specific landing page (below). However, only the main mobile menu continues to appear. I have tried flushing caches but unfortunately it still persists.

https://www.intersocial.com.au/courses

Greatly appreciate you taking a look.

Thanks,
Andrew

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