I just installed my floodlight ring camera in the same manner as you, at first it worked fine then about a day later it was “offline”, I tried resetting it, I resetting my WiFi, I have an eero extender, in fact 3, I tried turning the switch off for a day, when I turn the switch back on a green light flashes once then the floodlights come on and will not turn off. I only have white and black wires along with the ground, I have taken down 3 or 4 times checking if it was wired correctly, I’m also thinking it may be a faulty camera, I’m sure Ring has their share of defective products, just letting you know you aren’t the only one with this problem! By the way, my floodlight camera is on the backside of the garage which is the east side and I have another stick up camera on the north side of the garage not more than 3feet apart and it works perfect, the one on the north side is solar powered with 1 battery installed, have no issues with that one.