Coursepress Unit Page Labels for Course Overview as hyperlinks

I am on the very low end of understanding- so far, lots of clicking, zero coding.

I have just put in several courses an units for my site.
As far as I know I entered all the information in the same way.
Course-- Unit Settings-- Page Label-- check the box to display in Overview& Unit

For three course the list of units/pages show up as black text and you can't click on the units/pages

For one course they show up as blue text and you can click on them to go straight to that page.
That makes me very happy.

I'd like to do that for all my listing and I'd like to do it on purpose.

Can you tell me how that may have happened and how can set every unit/page to be a link?