Bests & Worsts Reviews from Amazon

I ordered 2 sets of lights - 1 month apart: 1 set June, 1 set July, both sets have stopped working. These are not on constantly either. I emailed the seller in September when they stopped working and no response. I have to take these lights down and it is very disappointing to my daughter - I bought them for her room!! Tried using the second power cord since I connected them and really only needed the one, that one did not work either. And of course, I missed the return window!