https://maker.pro/arduino/projects/iot-smoke-alarm-arduino-esp8266-gas-sensor I'm a layman who wants to do this. Have completed it as shown in the link. But I don't know how to see the website and am not make red led glow instead of green when i bring a matchstick close to the sensor

https://maker.pro/arduino/projects/iot-smoke-alarm-arduino-esp8266-gas-sensor

I'm a layman who wants to do this. Have completed it as shown in the link. 

But I don't know how to see the website and not make red LED glow instead of green when I bring a matchstick close to the sensor.