Don't Understand My Chart

Cecilia • Mommy to our rainbow princess Manuela Carolina (born Feb 2017) after a miscarriage in November 2015. Baby Boy due March 2020!
I am not sure why Fertility Friend is saying that I am 3 DPO. From my temperatures I would say 2 DPO with a coverline at 98.0. 
Thoughts?
Either way it wasn't our best timed month so I'm not really hopeful. On Tuesday the 19th I got what looked like a positive OPK on a traditional test but a negative on the digital test.