Hi,
unfortunately the developer confirmed me that the Nexus theme isn’t free, or has been free in the past. I guess I made a mistake on this one, my apologies.
Pricing for the theme is to be found here: https://www.elegantthemes.com/join.php
Starting at $69 a year you get full access to all of their theme, which still isn’t that much but it isn’t the same as free.
I will see if I get it fixed in the article, thanks for noticing!
Jacco