Flood light staying on

Hello I hope you can help. Over the past week, my floodlight cam has been staying on permanently. I have experienced no problems in the several years that I’ve owned the product up until now. I have always used a dusk to dawn lights on schedule – this hasn’t changed. I’ve deleted the schedule and added it again. I have checked the motion sensitivity / area. I have cleaned the sensor. I have ensured that I have the latest version of the app. I have ensured that my phone has the latest OS. I have checked that Alexa is set up correctly. I have used the reboot function from within the app. I have performed several hard resets using the button on the floodlight cam. None of these have helped. Any ideas please? Thanks in advance