There is the possibility to turn off the wifi for example if you want to use iotty Light Switch as a mechanical switch without any IOT features. To do so go on the app, click on Skip and turn off wifi when you add a new device (so you won’t need to enter wifi’s credentials).
In the event of switching off the wifi after the device registration (on the app), go to Device settings of any gang of the device you want to turn off the wifi, scroll to the bottom and click on Turn off the wifi. In this case the gangs will still be shown in My devices as disabled and without wifi.
Now it will appear the icon of no connection on the gangs you turned off, to turn them back on follow the instruction explained here.