Cant join friends

[kowloon]

I cant join any of my friends as of right now what do I do I tried all of the thing that I was told like have all people quit the game and reboot it, we restart the router and modem, took the game out and put it back in, turned off the xbox and then back on, and still nothing I think that the latest update could of did something to it that is making me and my friends unable to join each other we also tried destiny and I could join them and they can join me.