You can read the full text of the joint declaration by Pope Francis and the Archbishop of Canterbury. Here’s what may be the best line:
Much progress has been made concerning many areas that have kept us apart. Yet new circumstances have presented new disagreements among us, particularly regarding the ordination of women and more recent questions regarding human sexuality. Behind these differences lies a perennial question about how authority is exercised in the Christian community. These are today some of the concerns that constitute serious obstacles to our full unity.