My motion detection worked well one day, now hasn't for the last couple days

My cameras were detecting people on the sidewalk on the side of my house and front very well on Monday. Now since Monday night they aren’t detecting anyone walking. I haven’t changed the angle of my cameras nor anything in settings. Why would this be happening ?

Hi @user64872. Try cleaning the lens on your cam with a damp, soft cloth and a mild cleaner. You can also reboot the cam from the Device Health menu in the Ring app. Let me know if this helps.