• Bad Authentication data.
Installation issues:
If you get this message while trying to install the app on your Mac, its due to your security settings.
In order to continue with the installation, you need to open ‘System Preferences‘

Choose ‘Security & Privacy‘
And click ‘Open Anyway‘
AirPlay Display Permissions:
In order for this app to be able to control AirPlay Display it requires permissions to control this Mac using accessibility features.
To grant the app these permissions you need to unlock
And check the checkbox near the app name