Lead Developer
You’ll either have to:
a) Remove the hook from your specific custom post type archive.php file, and add your own title.
or
b) Overwrite the archive title function to include a conditional check for your custom post type: https://gist.github.com/generatepress/fe5309693719d138dbcf84381eb9a6b3
Documentation: http://docs.generatepress.com/
Adding CSS: http://docs.generatepress.com/article/adding-css/
Ongoing Development: https://generatepress.com/ongoing-development