Apply payment gateway filter to pages (appart from products)

Hi, I am using Woocommerce + Learnpress (plugin to create and sell online courses)

When you create a course, a PAGE is created (instead of a PRODUCT).
I want to use the plugin Woocommerce Payment Gateway per Product for these courses, but when I go to the page where my course is, I don′t get the change to select a payment method.

Any way of making your plugin work on PAGES apart from PRODUCTS?

Thank you