ITs been 4 days and my stats have not updated

Ok so I changed my gamertag 4 days ago and it is -Yoink!- me of because i cant do custom challenges and when I play a game it say all my stats but when I go top campaine it says and after im done with the custom challenge it says this person has not played reach.I dont know what it is with the site I tied everything from deleting waypoint to downloading it again?

Its like When I do a custom challenge and come back it says my old gamer tag is the one that created the challenge?And I cant turn it in.