I cannot play with my friends. When I'm loading into their world it says unable to connect to world. We have tried in game invites and Xbox invites and it doesn't let me join them. I then tried having them join me and it did the same to them but when they tried on each other's they were able to join each other. I have an open NAT type and so do my friends. It was working Saturday, June 19th and that Following Monday June 21st we started running into this issue.