No Connection - Zigbee2mqtt with mqtt broker

Hello,
i try to change my mqtt user/password and since yesterday i try to reconnect my zigbee2mqtt with the broker but it wont work, i don´t know what im doing wrong.
In the pictures are all configs i did.
I Made a new user in HA with user: mqtt_1 and password: mqtt_1, since then, no connetion. Could someone check it and tell me if something missing or wrong?
Now i got a Bad Gateway error…, i don´t know anymore what to do, really ned help

Here are the Screenshots, when i try to change the password in /config/integrations/integration/mqtt it says ok, restarts, and when i check its “password not changed”.

and no, i got bad gateway doesnt matter what i do, i also tryed without user/password, does the automatic addon user but still didnt work.

I try to change the user/password because i wanted to connect my hörmann garage door bridge via mqtt, thats where i landed now…

really hope someone could get me out of that :tired_face:

For starters, check that your mqtt broker is running in HA add-ons.

Then get MQTT Explorer for your PC and see if you can connect to your broker.

Lastly - try changing “core-mosquito” in all your configs to the IP address of your HA server - I am assuming you are running Mosquitto add-on under HAOS. This will eliminate any problems with mDNS.

Also both MQTT and Z2M add-on logs would assist in debugging.

Ok, thx, when im done with my job I’ll try it, just to understand, the configuration i made in every device are correctly?