I am writting my page and I want to let the user play songs from Youtube. I am using the iframe api and I am facing a problem. Yesterday trying the api I had no problem with copyrighted songs, and now if I try playing a copyrighted song shows me an error that must be played from youtube. Someone faced this problem and knows how can I play this copyrighted music? Thanks

I am using the iframe api from youtube: https://www.youtube.com/iframe_api and this is my sample code

    player.loadVideoById(id, 0, "...")
    player.playVideo();