Highlighted Nutrition Targets in Android mobile app

When setting up the Highlighted Nutrients in the Android mobile app (More -> Targets -> Nutrient Targets), I noticed that I only have access to change 7 of the 8. I believe the last one (Potassium) is hidden behind the bottom toolbar so I cannot access/change it.

I've attached a screenshot below to show you what I see when I scroll to the bottom of the page. You'll notice it only shows 7 of the 8 highlighted nutrients.