Can't get individual responses but works with group messages. Individuals can read my messages but cannot respond. There is a banner "This person is unavailable on Messenger". I am active on FB and Messenger and these individuals are NOT blocked. I have uninstalled, reinstalled, turned the phone off and on, changed the password for FB....nothing works. I contacted the developers via email but have not yet gotten a response. What good is this app if I can't have a conversation with others?