Net carbs in Diary don't match custom recipe

I am using the Macronutrient Target of High Fat/Keto with a Rigorous setting. I created a recipe for a chocolate turmeric smoothie. The recipe contains 7 net carbs. In the recipe, 1 serving is set to 1 serving per recipe. When I add this recipe to my food diary (1 serving is defined as "full recipe" in the drop-down list), the macro list in my diary shows zero net carbs. All the other numbers for energy, protein and fat are correct. How can I get an accurate number of carbs in my diary?