MQTT - Config hidden - where?

I now wanted to expand the MQTT configuration but am failing miserably. No matter what I enter, nothing more than my current consumption is being distributed.

I’m having the same problem here too, though this time it’s my own fault: I can’t find the MQTT configuration again.
I configured it based on a forum post back then. Now I can’t remember where it might be. I can’t find it in the usual MQTT configuration settings. But it works, so it must be configured somewhere.

I’d be grateful for any tips.

Greetings

It well be listed under Settings -> Apps ->Mosquitto broker -> configuration.

Thanks, but at the moment I can only see the settings for the broker itself – i.e. port, certificate and log level –
but there’s no entry for what’s being sent via MQTT

I think we need more clarification around these statements. Can you tell us more about what you mean here?
Basically exactly what are you trying to do. Focus on the goal, not what you think you remember.

Perhaps in the past you have tried a Mqtt companion program called "Mqtt Explorer" ?

That program allows you to see All messages to and from the broker in real time.