I think I've done similar things: I used both Clear Blue Advanced Digital and Wondfo. I only used these one month (no pregnancy yet), but my experience was that when I got a flashing smiley with Clear Blue ("high fertility"), Wondfo was negative. I then got a steady smiley a few days later, and Wondfo was positive for the first time (only day, actually).
So Wondfo indicated one day of fertility, whereas Clear Blue gave me two days of "high fertility" and another two days of "peak fertility."
Your post was from yesterday. So maybe you got positive on both tests today? I hope so. Good luck!