Terrible Heart Rate Monitor

<p>I bought a Fitbit Blaze in December 2016 and it worked well for 3-4 months. After that the heart rate monitor became incredibly inaccurate. My heart would beat vigorously and the heart rate monitor would read it somewhere in the 90's. And when it eventually picks up the beat again, my heart rate has already dropped, so you miss your peak. I've worn it in several positions, tight, loose, no difference. I swear at the #$%&@ thing everytime I train. The device is linked to my Discovery Vitality Profile and I constantly miss my goals, because the heart rate monitor does not work. I hate hate hate it!</p>