Ever since the last update, the group invite and quest share keeps bugging out. Lets pretend this directly affects the crown store, and have it looked into.
There is at least one known issue specific to forming a group and inviting others that we're tracking. May we get details about what you're experiencing with the quest share functionality?
It acts like you are not in a group. Group chat does not work, you can't share quests even your group window is blank. But, you are in a group and if someone else tries to group invite you they get the message "member already in group.