Hi, I'm having the exact same problem, and so is my friend! It says that according to the Harris-Benedict estimate, your Baseline Metabolism is 1,565 calories per day. But then in the Activity log it's giving me 2556 calories (difference of 991). When I try to use a custom baseline of 2100 (since that is what I have averaged by using a few other websites) it actually gives me 3430 calories (difference of 1330!)!!
What is going on? This makes it very hard to track how many calories I should be eating!