Lead Developer
If nothing is displaying when Execute PHP is checked, it means the conditional is returning false.
You’ll need to make sure you’re using it correctly and calling the right name: https://codex.wordpress.org/Function_Reference/is_tax
Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development