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.
- Complete instructions ITEAD Sonoff switches and sockets - cheap ESP8266 Wifi+MQTT hardware
- Complete configuration examples: GitHub - arendst/Tasmota: Alternative firmware for ESP8266 and ESP32 based devices with easy configuration using webUI, OTA updates, automation using timers or rules, expandability and entirely local control over MQTT, HTTP, Serial or KNX. Full documentation at · GitHub
That’s not a question on openHAB but on the architecture of MQTT: MQTT Topics, Wildcards, & Best Practices – MQTT Essentials: Part 5
Best practices
- Don’t use a leading forward slash