Clicks on Facebook Ads but NO Hops

Hi
I'm promoting the same ClickBank product on Facebook ads and Bing Ads in the same time
I'm using a redirect script to my hoplink so 1 click to my ad = 1 hop.
For Bing Ads it's correct : 11 clicks to Ad = 11 hops on Clickbank.
But on Facebook ads : 4 clicks to ad = 0 hops on ClickBank.

Any experiences with this ???

this has been discussed before, see: https://www.facebook.com/business/help/147965221941551/?ref=u2u