Ring Floodlight Camera (wired) - No Power

So I installed the camera the other day, it worked for a few hours and now has no power - I have taken it down and fed power to it from a standard plug, but there is no power to it, When I power it on I am getting a little flash on the lights, but camera will not power on, or led flash when I press the reset button, or hold it for 15 secs. Video of what happening attached. Any advice on what to do? I bought it a long while ago and have only just installed it.Thankshttps://youtu.be/O-24G3yA9W0