If your site is hosted on WordPress.com, HomeRunner does not work properly.
Why this happens. WordPress.com runs a restricted version of WordPress that prevents HomeRunner, and many other premium plugins, from working properly. The names sound the same, which is a common point of confusion, but WordPress.com is quite different from a regular WordPress website.
What you can do. For HomeRunner to work properly, move your site to a standard WordPress hosting provider such as SiteGround, Cloudways, or WP Engine.