No double xp notifications

I spent two days waiting for Kellogg to confirm my Pringle receipt for the double xp code I spent two hours of fighting with them just give me my code. Now that I redeemed it halowaypoint won’t give me the notification that let’s me use the freaking code!!! So now I can’t use that double exp with the event. Is anyone else having this trouble??? If so how did you resolve it?