Hello @dg,
There was an issue which I’ve fixed in the theme. Please update your theme once you get an update notification. After that please follow the instruction below:
1. After choosing custom post type you will see – For CPT heading and sub-heading, go here(with a link) with bold letters.
2. click on here(with a link), you will be redirected to the place where you can put Title and content. If the link doesn’t work, then you need to follow the instruction 3.
3. If the link doesn’t work, you need to install our official plugin named: Essential Content Types. here is the link:
https://wordpress.org/plugins/essential-content-types/
4. After installing, just activate the plugin and refresh the customizer page and the link will be clickable and you will be able to change title and content for the testimonials section.
I’ve sent you an screenshot as well.
Hope this helped you. Please let me know. Thank you.
Note: Please wait for a theme update.
Regards,
Sujeet