I've got MQTT and Z2M setup and running really well on a Home Assistant Green. Not issues until I needed to add support for IR. The blaster I have says it supports IR2MQTT and Home Assistant, its a LinknLink eRemote HA. To configure it I need to give it the MQTT username and password, I can see in the MQTT settings that the user is homeassistant (which I now know is part of the auto setup). But I have not idea what the password is.

Has anyone else dealt with this situation? Can you have more than one MQTT user or is there a way to connect this without having to create a new user, update the MQTT config and then re-enrol every device I have connected? Or is there a way to update Z2M with new credentials?