Faulty Clear blue advanced?

I’m getting irritated with my hormones and opk tests. I recently started Metformin which is supposed to help regulate my body/pcos. My dr told me to track my ovulation and recommended clear blue advanced and it keeps saying I’m at a “high chance” but then when I eject the stick they all look so faded. I have photos of both the stick and digital readings. I got the test package that tells us our “4 most fertile days”, but it’s literally been a week of “high” tests that don’t look high at all. Any advice?