Can I get help with my chart?

Mkay

I'm new to BBT, this is my first month trying to be consistent and I'm wondering if maybe I ovulated on a different day than app is recording from LH test? I'm having a hard time understanding the charts even after doing reading online and watching videos. Could someone tell me what day they think I ovulated? My CM was no longer fertile looking come CD 13 and high closed cervix as well.