@ivanov_d It’s still working for me, when using https. It got to be something else…
I changed my conf to this and it works…

{
	disabled: false,
	module: 'MMM-homeassistant-sensors',
	hiddenOnStartup: false,
	position: 'top_right',
	config: {
		host: "my.ha.url.com",
		port: "443",
		https: true,
		updateInterval: 60000,
		fade: 0,
		title: "Information",
		noaddress: "Away",
		token: "token...",
		values: [
			{
				sensor: "sensor.living_room_temperature",
				name: "Temp i Vardagsrummet %t%",
				icons: [{
						"default": "thermometer"
					}
				]
			}
		]
	}
}

I’m on Hass.IO (from start), maybe the api is still active there? I don’t get it…
It does not work for me on port 8123, but that’s to be expected when using ssl.

@luisestrada Yes, however, It can only be “one” control sensor / HA-module. So, if you have a bunch of lights, and you want to have only one “show” only when that specific light is “on”. You will have to add the module one time / light…
But if you have a specific light that you want to use as a “control sensor” for all the lights, only one module is needed…
I think you could also use an “icon” and some trickery to only show an Icon when the light is lit and when it’s not, not show anything… But not sure… :)