Whenever I invite my friends or I am invited, one of us is always shown to be offline even though we are both clearly online. Also whenever we send each other an invite to join each other's world it always say "Unable to connect to world", I made sure that we both have updated to the newest update for Minecraft and we are both up to date, I have also made sure that we are connected to the internet. I love this game and I would want to be able to join my friends in their world but this always seems to be a reoccurring issue.