Having been through the pain of a complete system rebuild following the MQTT débâcle, I today noticed that a few of my Sonoffs weren’t working. They had my old, pre rebuild, MQTT username and password (because of the rebuild).
I changed the username and password to my Home Assistant login and they began working again.
What I find odd is that in my MQTT add-on config I have NOT set a username and password.
Is this how it is supposed to be working?