When to BD?


So according to this app, my ovulation day is ALWAYS the day I enter a positive OPK. I thought when you got a positive OPK, ovulation would be the next day or day after. Why is GLOW marking my ovulation day as the day I get a positive? I feel like I’m totally missing my day because of this. I’ve covered my bases this month by doing it every day of my window but unsure what will come of it!