Where are the nutrients on the website

On laptop you have to click on the top bar called Reports. I prob misunderstood the ?.
For a long time, I thought I was low on potassium. Then one day, I looked at my milk nutritional info. No potassium. How can that be? Milk HAS potassium.
Many labels do not post potassium levels therefore people cannot input the data into the database correctly. Even coffee and tea had potassium that I did not know about.
For about two weeks I was looking up all foods I ate and writing down potassium on a separate piece of paper (I was insane). Things like quinoa did not have any potassium in the database.