Fertile window wrong

I use OvuSense to track ovulation and although I had a spike on my chart, it was not a spike from ovulation. It went back down the next day. On the <a href="https://play.google.com/store/apps/details?id=com.glow.android">glow app</a> it still says that was ovulation day and set up a fertile window. Is there anyway I can delete the fertile window?