Coverline

I am currently in disagreement to where Glow placed my coverline. There was one time I had a really high temperature I believe about 6 days after my period ended and he. My temperatures where very low during my fertil week. I disagree that the coverline is placed base on that one day. In other apps I can discard this temp as it doesn't quite got with any of my temps before or after. Has anyone experienced this? What are your thoughts as to where the coverline is placed?