MQTT Not responding to publish

[motor4all]

I tried to get MQTT working.
It is registering with the broker but not responding to a publish.
With a subcribe of # and switching off/on a relay does not give the expected:
Serial.print("Message arrived [");
Serial.print(topic);
Serial.print("] ");
I tried various syntaxes to publish, but no luck (ESP32LR20/R1Topic, payload 1)

[devantech]

We have tested this with Mosquitto and no issues are seen with the MQTT