Page Access feature doesn't actually limit access

[programehr]

The extension has an option to either give "guest" extensions access to all sites, or only some selected sites, or based on click. I tested this with a VPN ext and had three problems:

1. When I deny it access to a site, its icon changes (surrounded in a circle), but the ext still has access to the site. I can confirm it because the VPN changes my IP.
2. It does not work with Google (even no surrounding circle)
3. When I enable the ext for a site by clicking, I can't revert this action.

Thanks