Why did my fertile window not move

I'm confused I have PCOS and hardly ever have a normal cycle in June I had a period and then started prevera at the beginning of August. I started my period on the 26 of August and stated my OPK on cycle day 10 then got a positive on cycle day 12 which I recorded but Glow still has my ovulation window for this past week which is almost two weeks later than my OPK said. Which one do I go off of ? Why did it not adjust to my data that I entered?