Had my 245 for a month, and with all my varied workouts I've seen great progress in all areas including VO2max. My training status is always "productive" or "peaking", but after a tempo run this morning it categorized my workout as "unproductive" and my fitness as decreasing. My stress level is low and my body battery is fine. What's going on here? This is quite demoralizing but hopefully this is nothing more than a tracker error. Comments??