If you have created a mission and the audience is showing as '0' when it's live, you need to go back and edit the mission so the correct audience can see it. 

Go to the 'Audience' tab, where you might find either the segment or filter accordions open. If you want your mission to be visible to all users, you must make sure that both these accordions are closed when you are in the mission editor. 

If you are hoping to only show your mission to a select audience, ensure the filter or segment you want has been applied and save your mission.

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