This is so awful. I’m sorry. I have heard of this happening to several others, both through this site and on a neighborhood FB group. I’ve never heard of anyone winning an appeal. Everything about this sucks, especially that they are dropping this on you six months later and weeks before college applications are due. My own child’s score jumped dramatically last year and I was worried it would happen to us, but thankfully it didn’t. I wish I had more useful advice, but I’m just very sorry.