Did you home the campaign? The first Kaalgrontiid I joined, I played for an hour before realizing I wasn't homed on the campaign so I had no AP on the leaderboards
And did you log in with the character who earned the campaign rewards? I'm not sure if that's new, but now I don't get the end of campaign emails until I log on with Varanis Arano.
Those are the only reasons I can think of why you might now have gotten yoir rewards that arent a bug.