Frustrated any help.

Tiffany • Pregnant with baby #2!!

So this is my second month TTC first month using ff. It said I ovulated cd14 which would make sense looking at my temps. I ovulated last month according to glow on cd22, so after being told ff is more accurate I “tricked” glow by telling it I had a positive opk test on cd14 and 15. Now ff is telling me I ovulated cd18? I’m confused I had a lot of hope this month now I’m just unsure.