Hi there, @J.aussie! With your other Ring devices working as intended in the home, this camera should be as well. If you have a Stick Up Camera Elite and are connecting via wifi, please ensure it is connected to your 2.4 Ghz network. Alternatively, the Stick Up Cam also has ethernet connection capabilities. For any other Stick Up Cam, the 2.4 Ghz wifi is going to be the default connection.
The next best step will be to reset the camera by holding the setup button for 20 seconds or going through the steps to reconnect the device. As a test, when setting the camera up again, try leaving it nearest the router for some time to see if it still disconnects. If this concern persists, or if you believe it is a concern with the camera itself, please give our support team a call at one of the numbers available here. If you are outside of the US, please go here to see how to contact support.