How to fully integrate Webflow with PayPal?

Hello everyone.

I’ve been trying hard these past days to fully integrate PayPal into my Webflow e-commerce site but I always hit a wall.

Users are able to checkout using stripe and receive the confirmation email immediately. PayPal Business account is already connected with Webflow and I have added my custom button into my checkout page.

However, when a user checks out with PayPal, they receive confirmation of payment by PayPal, but no confirmation email by Webflow. I tried using Zapier and other stuff to connect those 2 but I couldn’t get it right.

Can someone identify the problem and perhaps offer a solution?

Tl;dr: PayPal and Webflow can’t communicate when an order is executed in my website.

Here is my site Read-Only: [LINK]1
(how to share your site Read-Only link)