Lights do not work on floodlight

We have 2 wired floodlight cams and have been installed for almost 2 years. 1 works just fine and the other doesn't. The cam works as intended, but the lights aren't coming on. I can hear it "click" as if the lights are going to come on yet they never do. Nothing has changed and it suddenly just stopped this week. I tried resetting our router and factory restore on the floodlight, but no dice. Again, the cam works just fine and it is getting power and has a signal, but the lights are not working.