Advice please 😭! : can CB advance miss your surge?

So I have been testing with clear blue digital advanced and the dip OPK strips and I am currently on day six of a flashing smily. A few days ago I had EWCM and my dip strips were darker (not quite a blazing positive but pretty dark). I have never had 6 days of flashing smiley before and i really thought i would have ovulated by now.

My question is is it possible that I ovulated on that day that the dip was darker and I had EWCM? Is it possible that the digital didn’t pick up on it?

I’m still going to keep testing and BD EOD but now my dip strips are back to being verrrrry negative