BMI calculation seems out
 

Fitday tells me that I am in a healthy weight range, but that:

"The healthy weight range for your height is between 132.6 kgs and 179.2 kgs."

I've checked my height, but it's correct at 1.81m. I'm 76kg.

Any suggestions as to what the glitch might be?

I've notified our tech team for them to look into it. Thank you!