Home page content only displays for logged in users

The content (images and text) in the content area of the home page will only display to logged in users, not to logged out visitors.

I have tested:
Administrator and Author users
Chrome and Firefox browsers
All plugins disabled

I am using the legacy theme WPMU Nelo, available here: https://premium.wpmudev.org/forums/topic/wpmudev-dashboard-plugin-update-legacy-themes/#post-3344246

Support access is granted