Fitbit charge won't stay charged

I got my "Fitbit Charge" 3 months ago and it worked great. But now it won't stay charged for even 12 hours. I have implemented all of the suggestions - all of which I knew before asking for support. The charging cable is plugged into a working USB port. The end plugged into fits securely. The battery image appears. I charge it for at least 2 hours. I fully charge it each time. I do not have any alarms set. I turned off notifications which did not enhance holding the charge to the battery.

I am so disappointed that I cam not able to fully use my Fitbit because it has to be on the charger every 12 hours. Is anyone else having this problem?