Do you ladies think they’re broken?

Supposed sitting here in my fertile week. My ovulation date has been pushed back several times by the app from 7/22- now 7/27... I’m sure the adjustment has to do with my very obvious negative opk‘s... is there any way these just might be defective? I should probably mention that I’m on cycle day 25 and I’ve been taking these at 10am, 4pm and 8pm since my period ended. They always look pretty much the same.

UPDATE.

This is my first month tracking and first time purposely ttc.

UPDATE:

I think I’m fine. I’m pretty sure the tests were just crap. I just got different ones today and decided to do a side by side test... I think the picture speaks for itself.