Re: PfSense Captive Portal
It sounds to me like you're connected to a WiFi network that requires authentication. Have you tried using a different WiFi network?
Edit: including my source, from searching online:
The Captive Portal function in pfSense allows you to secure a network by requiring a username and password (or just a click through), entered on a portal page. If you are using authentication, this can be performed using pfSense's built-in user management, or an external authentication server such as a RADIUS server.