EDD and Artificial Insemination

SandyCastle • Momma to a beautiful little girl! 💜 HLM 💖
Hi all
​I got a bfp this morning and ive just downloaded this app. Its telling me that im 3 weeks 4 days based on the 1 day of my last period and my average cycle. I know this isnt possible as i inseminated on 18th August therefore making me 11dpo...does anyone know how i would input this into Glow <a href="https://play.google.com/store/apps/details?id=com.glow.android.nurture">Nurture</a> and what my EDD is?