Hi, please goto Permalink & URLs tab and set “rename plugins” option to “all plugins”.
Also, I could see in your website’s page source, some text added by plugins. Please add the replacements below in “replace in html” option under replace tools tab:
Yoast SEO plugin ==> YSP
https://yoast.com/wordpress/plugins/seo/ ==> [Remove]
Powered by Visual Composer – drag and drop page builder for WordPress. ==> PVC
If wordpress is still being detected then please let us know your website’s wp-admin login details (as private reply), so that we can look into it further.