What am I doing wrong with this app?

I have my cycle set to 31 days as that is what my cycle is.

For some reason and I can’t figure out why or how to fix it but it always has my ovulation and period set to 29 days. It says I am one day late for my period right now when it shouldn’t even be here until the 3rd. When I track my ovulation it’s always 3 days after their guess. It’s super annoying haha.

(There’s no way I can be pregnant rn and actually late.)

Idk maybe it’s mom brain and this is a silly post but ladies I just cant figure it out haha. Ty!