Average days / week feature for Plus members

On my dashboard 30 day stats the Average days / week indicates "6" but I've marked workouts complete on my calendar everyday for well over 30 days (Saturday and Sunday are usually custom workouts only but I think they count towards my average?). Does anyone know why all my workout completes aren't being counted or has anyone experienced the same thing with your stats not correctly reflecting your actual average days / week after marking the day complete?