I made a duplicate of my website with a different domain, and I forgot to block it. I never use the duplicate website, so basically it got no visitors no links or anything. Then at about few weeks ago my ranking dropped, didn't know why, and today I realize that website was not block. Do you think it was because of that my website was dropped? By the way that duplicate website has been up for six months now. Or it dropped because of different reason.
hope so it could be the one of the reason I think you should check onpage may be there were any other reason