Installing Fonts for Adobe XD

I've read numerous posts on this topic and left my afternoon open to explore this and do this right without pressure.  

1. I see the fonts missing in the examples (I'm trying to certify XD and want to review demos before I take the test). 

XD_Font1.png

2. I tried to click to install but nothing happens on the (orange buttom). In my readings, I see you have to go into CC account app to install. I go there, verify I have adobe fonts turned on and get redirected to here, fonts.adobe.com 

XD_Font2.png, XD_Font2a.png, XD_Font2b.png, XD_Font2c.png

I still cannot install these fonts through the search. Does this mean that the fonts were purchased or custom and I cannot install them and need to replace them? 

Thanks in advance.