Login redirection connection refused

I'm using authpuppy auth server with wifidog captive portal on an embedded system using raspian (Debian 8 jessie) . I start wifidog in debug and foreground to test and everything seems to be going ok.

However, when I connect a device to the AP, wifidog catches the request ok and sends to the device what should be the login page, but instead of having an actual portal to authenticate, the device browser displays:

"'The webpage at http://127.0.0.1/login/?gw_address=192.168.2.1&gw_port=2060&gw_id=etc' could not be loaded because:
net::ERR_CONNECTION_REFUSED"

I've installed basically all authpuppy plugins, yet I keep getting the same response.

I'd really appreciatte any input on this, I'm not sure what I'm missing

Thanks in advance
Best Regards