All WordPress installations added using the WordPress Toolkit or through the Applications page appear in the WordPress Toolkit automatically; those installed manually need to be attached to the WordPress Toolkit. If you have upgraded from an earlier version of Plesk and you used WordPress, we recommend that you attach all existing WordPress installations to the WordPress Toolkit. To attach WordPress installations to the WordPress Toolkit, go to Websites & Domains > WordPress and click Scan. Note that if you install new copies of WordPress manually after the scan, these WordPress installations will not be attached to the WordPress Toolkit.
To detach a WordPress installation from the WordPress Toolkit, go to Websites & Domains > WordPress, click the WordPress installation name, and then click Detach. Note that a detached WordPress installation will be attached to the WordPress Toolkit again after you perform a new scan for WordPress installations.
You can completely remove any installation, no matter how it was installed: using the WordPress Toolkit, through the Applications page, or manually. To remove a WordPress installation from the WordPress Toolkit, go to Websites & Domains > WordPress, click the WordPress installation name, and then click Remove.