When accessing the Facebook Leads Trigger, after selecting the pages you want to authorize, no Page is shown in the list.
This may be related to how the permissions are given to a user inside a Business Manager (BM), where the user is given access to leads_retrieval inside the BM and not the page directly.
This is an everyday use case; when a client (from their BM) shares the page with your BM (the agency), you create and link an ads_account in your BM to the shared page and assign people/users inside your BM to manage these resources.
It looks like you have opened this on GitHub as well, Please try to stick to one location so we don’t have multiple people looking at the same thing.
We will look at the PR shortly to see if it causes any other possible issues but at a quick glance it looks good to me it just depends on if you can use that scope if you don’t need it.