I have followed the steps on GitHub - SmartThingsCommunity/smartapp-example-no-devices-nodejs-lambda: Give Lambda SmartApps a try without any physical devices. to create my first smart app.
I have deployed to AWS, registered successfully and I can see the App in my routine → discover list.
However when I click on it I get a network error.
I use AdGuard DNS and disabled that and even disconnected from Wi-Fi and still receive the same error.
Any ideas?