Great question! ADG will work if the Paypal button (or any additional checkout button) if the button is located on the CHECKOUT page.
It will not work if the button(s) is located on the Product page (Buy Now) or Cart page.
For example, this slider cart:
Example of Buy Now on Product Page:
As always, if you have any questions about the app or how it works with checkout buttons.
If you still need help with your promotions, please don't hesitate to contact us at email@example.com