What is going on??

You guys need to fix this app! Ever since the update its not calibrating correctly. For instance the last two weeks it cuts my workouts down by 200 or more calories. It will display I burnt 700 during my workout and only registers 500. This is becoming extremely frustrating and Im thinking of returning my belt and getting something more accurate. It looks like several other people, according to their reviews, are experiencing the same issues.

Mrm08 about Myzone | Make movement count, v2.0.1