Funnel not working, what am I doing wrong?

Hi to everybody,
I tried to run an offer on AdCombo but I got 0 conversion.
The funnel was: Fb Traffic -> Pre Lander -> Final Lander Offer. I tested 2 types of pre landers with 3 landers offer.

The campaigns setup was:
– Lead to Lead/ViewContent with broad audience and female audience;
– Engagement to ViewContent with bro ...