Follow the steps below to get your Mac OS device back online.
If content is not showing, the device will either be off or not running the embed signage application. Make sure the device is on and running the app.
If content is showing, the device has probably lost network connection, to reconnect:
Press the 'ESC' key to bring up the screen below
Enter '36233' as the default password and select 'Quit'
This will bring up the Mac desktop, where you can reconnect to your network.
Once reconnected, relaunch the embed signage application by selecting the icon on the desktop or the application from the 'Applications' folder.
When your device has an internet connection and running the embed signage application, it will show as online on your account. You can now publish new content.