If your Arlo camera isn't detecting motion, there are several simple troubleshooting steps you can take. First, check the camera's placement and ensure it has a clear line of sight to the area you want to monitor. Adjust the motion detection sensitivity in the camera settings, as it might be set too low. Confirm that your camera is in the correct mode for motion detection and update its firmware if necessary. Check the camera's power source, review motion detection zones, and test different camera placements if needed. If the problem persists, don't hesitate to contact Arlo experts for assistance in resolving the issue by calling at +1-855-990-2866 and maintaining your home security.