My Furby boom tail isn’t responding. Please help me!

Hi! 👋 My Furby 2014 isn’t responding when I pull its tail. At first sight I thought the little fabric was loosen but it wasn’t. I heard the click but my Furby wouldn’t respond when I pulled its tail. Then I did some research and found nothing. I watched some teardown videos to see if some parts of the tail were connected from what the problem was, there was nothing. But I only found out that there was a tail sensor. I can’t find videos of my problem and there also wasn’t any battery league’s or something. Please help me!!!