Glow is starting to make me frustrated

Katalina

so my cycle has changed since December of 2017. Glow keeps saying that if I log my predictions become more accurate, however, my predictions aren't changing at all. my cycle went from 32 days to 28 days and has been there since December, yet glow still ha me at 32. That means my fertile week predictions are all off. I can't go in and change it. like I'm ovulating now but Glow says I don't ovulate for another week. then my next period date is wrong every single month. like when is it really going to update and change to actually fit my cycle. Maybe I should delete past months that I have logged so that it can become more accurate. idk