Presence Detection with Monitor Network Problems

Hi :

I wanted to set up presence detection with the Monitor Project. I set up everything as per developer instructions and my Raspberry Pi zero 2 can listen to bluetooth devices and detect them. But I am having trouble connecting to the MQTT protocol to the device to receive the messages from HA or even from any generic MQTT clients like MQTT Explorer.

MQTT Settings: (Raspberry pi)
IP Address: Localhost
User: user
pass: pass
Port 1883

Client side/HA
Host/Provider: raspberrypi IP
port1883
user: user
pass: pass

Any ideas ?

I figured it out; I am posting here for others. It seems that in Mosquitto MQTT 2.0 you need to edit the /etc/mosquitto/mosquitto.conf file.

If you go to the last line you need to add listener 1883
if you do that you will be able to connect following andrew instructions.