Hello there,
I have an issue with this funnel : https://darwin.enfinrentable.fr/systeme-sec
I tested it myself. The pluggin works just fine and payment with Paypal is ok, BUT I did not receive the fullfilment email from CF (just the default Paypal email) and the product was not assigned in my client profile (it’s a membership funnel).
I followed the whole procedure
Please, help ! 
Ok, update :
The CF’s support told me fullfilment emails did not fire cause the paypal links were on an order form and not a sales page…
Duh ?!
Somebody guys do know more about this ?
Updated you on the Facebook Group 
And indeed seems like even Paypal buttons (like described by Clickfunnels) are NOT working in your case, so please forward that testing page to CF’s support 
As of the time being there is NO issue with our Apps.
Please update me, if there is any update concerning this issue.
Best,
– @yassine