OPKs can be so confusing

Luckii

I used two OPKs today: ClearBlue digital tests, one that shows two fertile days and the advanced that had the flashing and solid face.

used Clearblue Adv around 4 am and I got a peak smiley but I didn't get any high Fertility smiley

went to sleep and woke around 730 to see if the regular ClearBlue would read the same and it gave me a blank circle.

which should I believe?

sn: always had flashing smileys before the peak fertility pops up