UNITS is not visible, units pages do not load

Units hyperlink only shows up on course overview page,

When you navigate to the individual unit page, nothing shows up except the header for the site, no content from the live units...

here is the link to the prior request, that was responded to, but did not speak to the original request:
https://premium.wpmudev.org/forums/topic/units-not-showing-up-when-published-on-coursepress-pro#post-871758