Hi there, @tiwick. I am sorry to hear that the plugin doesn’t work as you would have expected and that it resulted in this negative review. It only means that we can do better.
You mentioned the script paralyzed your site. Note that Site Kit doesn’t add any performance impacting code to a users site, if you check your sites source code before and after installing, activating, and setting up Site Kit you’ll notice only one meta tag link added, as below:
<meta name="generator" content="Site Kit by Google 1.28.0" />
The plugin is primarily an admin panel-operated plugin, allowing for the automatic insertion of various Google product snippets at the user’s preference, without any manual placement of code.
We’re committed to helping you resolve any issues if you would like to open a new support topic and hope that you’ll be open to changing your mind once the plugin successfully works on your site.
Thank you.