If your Arlo camera is not syncing to the base, it could be for a number of reasons. The most common reason is that the battery in the camera is low and needs to be replaced. If you have recently changed the batteries in your camera, it may take a few minutes for the camera to sync back up to the base. Another reason why your Arlo camera might not be syncing is if there is something blocking the signal between the camera and the base station. This could be something as simple as a piece of furniture or a wall. If you are having trouble getting your Arlo camera to sync back up to the base, we recommend moving it closer to the base station and making sure there are no obstructions in between them.