Hi,
Sorry for this, keep in mind that this free plugin may not be able to hide everything, on large websites.
The WP Hide provides many features to hide WordPress, mainly by changing default URLs, modifying login and admin dashboard location, changing API’s endpoints etc. After set-up is completed, most of the websites will no longer be recognised as using WordPress.
But other sites may contain complex plugins like Elementor, Divi, WooCommerce, JS Composer etc which outputs many specific traces, like classes and ID. So if someone ( or a system detection service ) sees such fingerprints it will link the site using WordPress.
The WP Hide PRO comes with additional functions that help with such traces, so you can virtually change anything, mainly through the PostProcessing and the Replacement functionality explained at https://www.wp-hide.com/documentation/html-css-js-replacements/
So if the free WP Hide failed to hide everything on your site, you might need the PRO version.
@boabo Make sure the WP Hide > Rewrites > Theme > Remove description header from Style file option is active, so it strips out any headers/details in the theme style.css
Thanks