The workflows module? Yes, it's included with core CB. It's impossible for it to not be installed. Installed doesn't mean you have a module configured in a module position though. Simply click "New" and create one with the type "Community Builder Workflows module".

Your attachment contains users personal email addresses and have removed it. Please be mindful of what's posted here. Again, these forums are public.

Ok, so you don't have a missing link issue. So the workflows module isn't of concern. That's the moderator approval page. What you're saying is you have no link on the moderator approval page to go to the profile that needs approving. Is that correct? You should be able to just click their username.

Rendering outside of profile uses the formatname field. Ensure it's set to display on profile (it can be on a tab in a not shown on profile position if you don't want it visible on profile), published, and the tab it is on is public access. Also ensure you have not protected it with CB Privacy or CB Conditional.

It also only seamed like 1 of the users in your image was missing their name. Have you reviewed their account from backend to see if they could be missing a name somehow?

It's also possible this is just a CSS problem (e.g. text was turned white by a CSS rule). Navigate to the page and press Ctrl + A to select all the text and see if you can see their name above their email address.