Heart rate and calories tracked by the Sense are inaccurate

[Pepin12]

first my charge2 suddenly atopped giving right heart rate on tracking and very low calorie expenditure. Contacted the aupport team they opened a case but nothing happened . I changed to sense hoping it will be better same thing. Even when i am running or doing hiit and sweating like almost dying still heart rate less than 100 and not considered active minute!!!! Its very frustrating tried the apple waych and very accurate. Its a shame to pay that money for that bad outcome 

Moderator edit: subject for clarity

[Giampi71]

@Pepin12 There is nothing to add actually or reply to your post. Sense/Versa 3 HR sensor seems having for many many people big problems of overstimating or understimating grossly the actual heart rate. Fitbit has somehow recognized the problems in few mods reply but there is no indication of an imminent update that might solve it.