End of TTW but confused, anyone had this?

Hello! I’m two days before my predicted period is due and having negative pregnancy tests.

I used clear blue digital to get my flashing smiley face and after 4 days I got my static smily face. Around the time I would normally get strong opks as I have a very regular cycle of 28 days.

This month my opks never got very dark? As I took them alongside the clear blue digital advanced?

But then got a stronger opk a few days ago on CD 24? The clear blue said I would ovulate on CD 17 which is normally when I would ovulate in the past.

Why was my clear blue digital saying I would ovulate but the opks weren’t positive?

Has anyone had this?