Because the digital flashes when it’s high, but not peak - it goes solid when you’re within 24/48 hours of ovulation so you’d expect a peak strip at the same time as a peak digital! So the flashing says it’s happening soon, go do the deed for the next few days! 💙
I understand your confusion; it’s frustrating when tests give different results. Digitals and strips can vary in sensitivity. Just keep testing, and you’ll get a better understanding.