- Go to the admin section of your WordPress site.
- Select the Plugins menu item.
- Select the Installed Plugins sub-menu.
- Scroll down to the “WPSSO REST API” add-on, and click its Deactivate link.
- Scroll down to the “WPSSO REST API” add-on, and click its Delete link.
- Click on the Yes, Delete these files and data button.
- Remove the wordpress/wp-content/plugins/wpsso-rest-api/ folder from your website.