Campaign Stats Broken

Having completed the campaign on Legendary I wanted all of the achievements. I’ve been working on getting all missions gold, all objectives and all skulls. My stats screens say that I have all skulls and all gold but my achievements don’t reflect this.
I have a game play of my campaign screen on my Xbox profile. My stats screen also sometimes messes up and only shows lines where the statsunami should be. My stats are also not updated on my service record. I don’t have all optional or bonus objectives done.
My GT is Deathbringer620
Xbox One
EU