I also recently got my Garmin FR245, and on the first day it was working beautifully.
However, since then, the sensors are all buggy.
- The body battery only recharges if I do a soft reset, not normal I guess!!
- The sleep is not being tracked properly, some days some gaps for several hours!!
- The stress level does not always shows up.
How did you people solve this? Go for a Polar watch??