My husband and I have just run into this problem. We didn't have any issues up until age of triumph was released. Have been reading and trying so many suggestions from forums and bungie website and nothing works. This has completely ruined the destiny experience for us. We were so hyped to replay some of our fav raids and now we can't do that. Really hope you come up with a fix soon. Not a whole lot of motivation to do destiny2 if we can't enjoy it together.