Glow was way off

Krystal • Happily married to the love of my life and starting our family!
Just fyi to yall. On Glow I am in my fertile window until the 30, saying my ovulation date was the the 28th. I took an OPK the the 22 along with the 23 and was ovulating so for anyone TTC defiantly use the OPKs!  
This is my OPK during my flow ovulation period.