K1100 kit WIFI connection issue

Hello people,
sorry I am new and not an expert. I recently purchased a k1100 kit and tried connecting it to the wifi. I have gone through every single step of the instruction, but it seems it is not working.
I can see that my device can connect to wifi cause my router app shows all the connected devices. I got MQTT client from the random generator site random.org. is there anyone to help, please?