Plugin being flagged as abandoned again

@emgb_520 Unless the author responds, I would consider it abandoned. To answer your question from another thread about how to find posts/pages with Custom CSS, you can run an SQL query in the database:

SELECT p.ID, p.post_title, pm.meta_value AS custom_css
FROM wp_posts p
JOIN wp_postmeta pm ON p.ID = pm.post_id
WHERE pm.meta_key = '_single_add_custom_css';

You will need to customize the query for table names if you have a different database prefix. This will return a list of post titles and the custom CSS that is written in each one. This way you can start to transition away from the plugin.