Creating Cache for “/wp-json/wp/v2/users?search=”

I am hoping this plugin will work for the “/wp-json/wp/v2/users?search=” request URI which is being called from a third-party service used to sync users between that service and our WordPress site.

The plugin is set up with the default settings.

I see the plugin did create an endpoint API cache for “/wp-json/wp/v2/users?search=” and the “# Cache Hits” column is increasing over time.

However, I am not quite sure why Expiration is always “Flushed” and Active is always a red X.

Is this correct behavior? Is there something additional I need to do? Or is it working as expected?

Thank you.