Weight tracking incorrect

💜💗11💗💜
So I put in 72kg as my pre-pregnancy weight and now I am 71kg. Yet the glow chart says it's at .6kg loss not a 1kg loss. It's not an issue now as it's easy enough to work out but just kind of annoying and will be more so further along when I gain weight. 
How do I fix this? 

Glow Resources

Let’s Glow

Glow is here for you on your path to pregnancy

Glow helps you navigate your fertility journey with smart tools, personalized insights, and guidance from medical experts who understand what matters most.

25+ million

Users

4.8 stars

200k+ app ratings

20+

Medical advisors