Since Season 4, I can't join my friends' parties. Even when invited, I keep having to decline. This will cause me to lose the trust of my friends. Please fix this immediately.
Ideas
I've got a similar issue (on PC.) Whenever I try to join a friend's party, I get an error message. Turning crossplay off seems to work, but then we're being placed in smaller lobbies with fewer players. Would love to be able to play in a party with crossplay enabled.