That’s incorrect. Please provide an example.
These are the features of the Free version (outlined on the description page):
NGFB Free / Basic Features
Adds Open Graph / Rich Pin meta tags (Facebook, Google+, Pinterest, LinkedIn, etc.).
Twitter Card meta tags:
App Card (requires the WPSSO plugin and WPSSO Mobile App Meta extension)
Summary Card with Large Image
Summary Card
Player Card is provided with the Pro version (as it requires video discovery modules available only in the Pro version).
Photo Card, Gallery Card, and Product Card were deprecated by Twitter on July 3rd, 2015 and are no longer supported.
Support for Automattic's Accelerated Mobile Pages (AMP) plugin.
Support for featured, attached, gallery shortcode, and/or image HTML tags in content.
Configurable image sizes for Open Graph (Facebook, LinkedIn, etc.) and Pinterest.
Customizable image dimensions for each Twitter Card type.
Fallback to image alt values if the content and except do not include any text.
Optional fallback to a default image and video for index and search webpages.
Validates image dimensions and aspect ratios for reliable sharing results.
Auto-regeneration of inaccurate / missing WordPress image sizes.
Fully renders content (including shortcodes) for accurate description texts.
Support of WordPress and/or SEO titles for Posts and Pages.
Configurable title separator character (hyphen by default).
Configurable title and description lengths for different contexts (Open Graph, Twitter Card, SEO).
Includes author and publisher profile URLs and markup for Facebook and Google Search.
Includes hashtags from Post and Page WordPress tags.
Includes the author's name for Pinterest Rich Pins.
Includes a Google / SEO description meta tag, if a known SEO plugin is not detected.
Includes author (Person) and publisher (Organization) social profiles, publisher (Organization) logo, and WebSite Site Name in schema.org JSON-LD format for Google Search and their Knowledge Graph.
Configurable website / business social accounts for JSON-LD markup:
Facebook Business Page URL
Google+ Business Page URL
Pinterest Company Page URL
Twitter Business @username
Instagram Business URL
LinkedIn Company Page URL
MySpace Business (Brand) URL
User profile contact fields for Open Graph, Twitter Card, and JSON-LD markup:
Facebook URL
Google+ URL
Instagram URL
LinkedIn URL
MySpace URL
Pinterest URL
Skype Username
Tumblr URL
Twitter @username
YouTube Channel URL
Validation tools, social preview, and meta tag value tabs on admin editing pages.
Customizable multilingual / multi-language Site Title and Site Description texts.
Contextual help for every plugin option and comprehensive online documentation.
Uses object and transient caches to provide incredibly fast execution speeds.
Include / exclude each social sharing button based on the viewing device (desktop and/or mobile).
Social sharing buttons for the content, excerpt, in a widget, as a shortcode, floating sidebar, and/or PHP function.
Buffer
Email
Facebook
Google+
LinkedIn
ManageWP
Pinterest
Reddit
StumbleUpon
Tumblr
Twitter
WhatsApp (for Mobile Devices)
If there’s an error in this description, please let me know. All Free version features are fully functional, though, obviously, there are additional features available in the Pro version (custom post / term / user meta, 3rd party plugin and service integration, and the advanced settings page).
js.
