Once the app is installed, launch it.
The app will ask if you want to automatically start when device start up. It recommended to select yes, unless you want to launch the app yourself every time manually.
You then will see this pairing screen:
Go to AeriCast portal: app.aericast.com
Once you logged in, click "+ Add Device" to your portal
Enter the 4 digits from your screen
Give it a name and select your layout. Then your device will be in your account.
If you want to learn more about how to create the layout, you can click here.
You can also delete your device if you don't want it anymore.
In the Device tab, you can click the three dots button.
Click the "Delete" button to confirm it.