Selecting and using a VPN connection using the add oin works fine and quickly.

However in Firefox this add on has an annoying bug: when the extension is enabled (even when you are not connected to a vpn) all sites that require a user name/password using basic authentification do not work anymore: the user name/password dialog is being supressed. You have to switch off the PrivadoVPN Web Proxy extension if you want to log on to anther site. This is annoying.