The General pane of Billings Pro Server displays a Red button for Billings Pro for iOS?
Billings Pro General Pane displays a red button for Billings Pro iOS.
Why is this problem occurring
This denotes that the Touch Server is currently turned Off. It must be turned On for iOS devices to connect to the server and use Billings Pro for iOS.
Go to the Touch Server pane of Billings Pro Server and move the On/Off Slider to the ON position.