Thanks. Disabling the automation resolved the issue. The light is now only activated by motion, and stays off the rest of the time as I'd wanted it to.

@Solla-topee Thank you for the response. My app doesn't have "Night Mode" under Device Settings > Video & Display but I did find an automation under the Automation page. I've disabled that now and...

I've installed the C720 and set it up in the app. Everything works fine, except the light comes on permanently at sunset. I then have to turn it off manually. I have disabled the Floodlight setting,...