confused by app!!

Cait

So I used glow to track periods about 3 months before TTC. it has been right on track everytime and it said I was due for AF today. It didn’t come yet so I hit “missed period”.

When I did that EVERYTHING changed. Like my ovulation date from March went ahead 3 days and now my period is due Monday?? Idk how this makes any sense lol

Has this happened to anybody else? I need some insight cause I suddenly feel like I don’t trust glow like I used to lol