What you have posted: http://127.0.0.1:8080/json.htm?type=com ... cmd=Toggle is the operation that changes state of the switch in Domoticz and this does not make sense.

It was just example, I of course insert my ESP IP address.

I`m also from Poland

Yes of course:)
I put IP address of my ESP.

Hi, I`m trying to build my own wall switch module with ESP 8266 (ESP12). I have configured one GPIO - 0 as input with pull up, module is assigned to ON/OFF switch via WIFI to Domoticz. When I change state on pin 0 lamp in Domoticz is also change state, everything is working. On ESP is firmware R048 ...