Help with configuration of mqtt using Sonoff switch with ESP Easy

Hello,
this might not be the answer you are looking for, I just want to state it once.
While ESPEasy might be a nice toolbox for the ESP in general, for the Sonoff modules you could be better off using the specialized firmware “Sonoff-Tasmota” by arendst.

That’s not a question on openHAB but on the architecture of MQTT: MQTT Topics, Wildcards, & Best Practices – MQTT Essentials: Part 5

Best practices

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