All in One SEO uses the WordPress REST API to communicate with the WordPress application.
This is a common way for plugins to connect to and communicate with WordPress.
However, some plugins may block access to the REST API. This can include security plugins and CDN services that have an option to block all communication with the REST API or just allow communication for logged in users.
All in One SEO only communicates when you make changes to the plugin settings, which requires that you’re logged in to your site and in the WordPress admin area.