Clear blue advanced digital nothing to full smiley

J

So this test says it can predict your 4 most fertile days. No smiley no surge, blinking smiley some surge detected, solid smiley peak-I’ve been using it for the last 3 months(along with cheapies), my cycle is like clockwork but I have not seen a blinking smiley EVER, it goes from nothing to peak even from testing 2x a day. Has anyone experienced this? I only use it as another confirmation for timing but I just feel like I’m missing out for how much you pay for these tests.