Clearblue Ovulation Advanced Confused

TTC been loving the clearblue advanced kits for ovulation. But lately, it's been a bit confusing.

Typically, high peak (flashing smiley face) only lasts 2 days and onto 2 days of ovulation day. But this month has been different and been trying to get a reason why. This time, 4 days of high peak, I found it weird yesterday, and weirder today..so I decided to grab another test strip and kit to see if it was acting up..and now the new one shows that it's not at all.

What is going on? Please someone explain it to me because I'm so confused.

Thanks!