Unable to finish Z2MQTT configuration - Connection refused: Not authorized

Hi,
I'm new, making my first HA on Dell Wyse.

Yesterday I tried setting up z2mqtt with some help from yt tutorials and Gemini, but from the start I have the same problem:

z2m: MQTT failed to connect, exiting... (Connection refused: Not authorized)

I have scraped HA and zigbee communities, and tried everything for 6 hours yesterday. I tried with and without setting a zigbee user in HA, flashing and updating the dongle, everytime I change the z2mqtt I only get this in logs:

[09:04:55] INFO: Preparing to start...
[09:04:56] INFO: Socat not enabled
[09:04:56] INFO: Starting Zigbee2MQTT...
Starting Zigbee2MQTT without watchdog.
Onboarding page is available at http://0.0.0.0:8099/

I'm a newbie, so please excuse my ignorance.

To start...

  1. What ZigBee coordinator are you using?

  2. You have MQTT broker installed, correct?

  1. Have you edited the Z2M config? If so please share the code. If not we can use the onboarding feature.

i have the same problem
i have Sonoff | Zigbee 3.0 | Dongle Plus-E
and ha greenbox
MQTT broker installed
[14:33:41] INFO: Preparing to start...

[14:33:41] INFO: Socat not enabled

[14:33:42] INFO: Starting Zigbee2MQTT...

Starting Zigbee2MQTT without watchdog.

Onboarding page is available at http://0.0.0.0:8099/