What is the name in brackets? (to the right of the map name on the HUD bottom left).
Go to Pause -> Game -> Statistics. What is the Creators name?
Both of these names must match your gamertag exactly.
Also, for each rating you get:
Mode must equal Dig Deep, Survival or Creative (not some random number caused by the bug).
Difficulty must equal Peaceful, Normal or Legendary (not some random number)