Lights

Hello group 👋 recently purchased the l40 ultra ae👍 so far I’m loving it. When we first got it the front lights came on just in low light places , but recently the front lights don’t come on at all🤔 I’ve had it on live view through the in built camera and the lights come on , but as soon as I stop viewing the lights go off . The unit still operates ( vacuuming as normal ) it doesn’t bump or run into anything and avoids obstacles, I just can’t reason why the lights are not on as they were when we first bought it . Is this normal any help appreciated