Good selection overall

I selected Fantasy as one of my genres, and I didn't realize I had to specify "no YA fantasy" because there's also a YA genre. So half my box was two books in the same YA series. I'd like to be able to make changes to my preferences to avoid this in future, since I signed up for a six-month subscription, but there doesn't seem to be a way to do this. Everything else about the experience was great, and I love the other two books.