Facebook feed not displaying

Hello-
Continuing a conversation begun in another thread.

We have been using this plugin for a couple years.
We are now upgraded to 2.5.6

It no longer functions for Facebook. All that displays where FB should be embedded is either blank space or “LIKE – You and 888 others like this.” In FB Settings our Access Token is there, but the Page ID field is empty.

As requested, I emptied the plugin cache, but the problem persists, on two pages:
https://uucb.org/ (in a widget in a sidebar, lower right)
https://uucb.org/about-us/social-media/
The shortcode used is the same on both:[fts_facebook id=uuberkeley posts_displayed=page_only type=page]

Note that on the second page, the fts_ shortcode for Twitter displays as expected, through a widget in the right sidebar.

### Begin System Info ###
SITE_URL: https://uucb.org
Feed Them Social Version: 2.5.6

— WordPress Configuration:
WordPress Version: 4.9.8
Multisite: No
Permalink Structure: /%postname%/
Active Theme: UUA Congregations Child Theme 1.0
PHP Memory Limit: 768M
WP_DEBUG: Disabled

— Webserver Configuration:
PHP Version: 7.0.32
Web Server Info: apache

— PHP Configuration:
Safe Mode: No
Upload Max Size: 128M
Post Max Size: 128M
Upload Max Filesize: 128M
Time Limit: 120
Max Input Vars: 3000
Allow URL File Open: On (0)
Display Erros: N/A

— PHP Extensions:
FSOCKOPEN: Your server supports fsockopen.
cURL: Your server supports cURL.

— FTS Settings->Global Options:
Cache time: 1 Day (Default)

— Active Plugins:
amr shortcode any widget: 3.6
BackWPup: 3.6.1
Better Search: 2.2.0
Blighty Explorer: 2.2.1
Category Posts Widget: 4.8.5
CPT Bootstrap Carousel: 1.9.1
Custom Sidebars: 3.2.1
Duplicate Page: 2.7
Dynamic Dates: 2.0.5
Easy Custom Sidebars: 1.0.9
Enable Media Replace: 3.2.7
Event Calendar Newsletter Pro: 2.9.27
Events Manager: 5.9.5
Events Manager Pro: 2.5.1
Feed Them Social (Facebook, Instagram, Twitter, etc): 2.5.6
Get Widget ID: 1.1
Gutenberg: 3.9.0
Insert Headers and Footers: 1.4.3
Instagram Feed: 1.10.1
Jetpack by WordPress.com: 6.6.1
List category posts: 0.79
MailPoet 3 (New): 3.11.3
Mammoth .docx converter: 1.11.0
MCE Table Buttons: 3.3
Media Library Assistant: 2.75
Members: 2.1.0
Ninja Kick: Contact Form: 3.2.6
Page Links To: 3.0.1
Per page head: 1.4.2
Post Expirator: 2.3.1.1
ReOrder Post Within Categories: 1.5.0
SEO Redirection: 4.13
Seriously Simple Podcasting: 1.19.12
ShortCode Redirect: 1.0.02
Shortcodes in Sidebar: 3.0
Shortcode Widget: 1.5.1
Simple Custom CSS: 4.0.1
Simple History: 2.28.1
SiteOrigin Widgets Bundle: 1.13.0
Staffer: 2.1.0
Tabby Responsive Tabs: 1.2.3
Tag Pages: 1.0.1
Testimonials: 1.5.4
TinyMCE Custom Styles: 1.0.9
UUA Services Plugin: 1.0.3
Wordfence Security: 7.1.15
WordPress Importer: 0.6.4
WP FullCalendar: 1.2
WP Meta and Date Remover: 1.7.2
WP Rollback: 1.5.1
Yoast SEO: 8.4
YouTube: 12.1

— Custom Token or Keys added to Options Pages
— You must have a custom token to use the feeds

Facebook App Token: Yes
Twitter Consumer Key: Yes
Twitter Secret: Yes
Twitter Token: Yes
Twitter Token Secret: Yes
Pinterest Token: No
Instagram: Yes
YouTube: No

— FaceBook & Twitter Date Format and Timezone

Date Format: l, F jS, Y \a\t g:ia
Timezone: Kwajalein

— Hide Facebook Images in Posts:

Hide: No

— Hide Facebook Error Handler:

Hide: No

— Fix Twitter Time:

Fix: No

— Disable Magnific CSS:

Fix: No

— Fix Internal Server Error:
### End System Info ###

The page I need help with: [log in to see the link]