I don't understand why the taking charge of your fertility app is saying I am 12 DPO

But fertility friend is saying I'm 9dpo which sounds more accurate considering I didn't even have a positive opk on the day taking charge of your fertility is trying to say I ovulated

Could it be because of the missing temp on CD 15 that has taken charge of your fertility confused does anybody have that app and can help me figure out if it said on BBT for the settings thank you in advance