Ovulation not showing up??

Tilly 🤍 • 🇧🇧🌴 23💕 Microbiologist 🔬 Virgo ♍️

Sooo I'm posting for a friend. However, my friend has an android phone and i told to download eve as i love the app 😩 but like she can't see her ovulation day 🤷🏽‍♀️. She can see whem her menstrual cycle starts and ends but no ovulation day.

Could anyone help me fix this??