Hello There,
Thanks for writing in! By default, page excerpts were disabled by WordPress. This is why you are only seeing page titles and no descriptions in it. You have to turn in on by inserting this following code in your child theme’s functions.php file
// Add manual excerpts to pages
// =============================================================================
add_action( 'init', 'my_add_excerpts_to_pages' );
function my_add_excerpts_to_pages() {
add_post_type_support( 'page', 'excerpt' );
}
// =============================================================================
To display the page excerpt, you may have to use the manual excerpts. To add an excerpt to a page, simply write one in the Excerpt field under the post edit box. Please see the screenshot below: http://prntscr.com/a57dbr
Excerpts are optional hand-crafted summaries of your content that can be used in your theme. Learn more about manual excerpts here: https://codex.wordpress.org/Excerpt
We would loved to know if this has work for you. Thank you.