Glow App inconsistent on two devices

Pr

Hey! I decided to download Glow on my iPad in case I need to update anything if I'm charging my phone. I signed in with the same credentials I use for the app on my phone. Somehow the ovulation date is different on the app on my iPad than on my phone. All the data I inputted is the same, so I'm not sure how the ovulation date is not the same. (I refreshed to make sure both apps on devices have today's date correct.) Has this happened to anyone?