Facebook Graph API Comment Doesn't Return From

Question

I have a Facebook comment and I would like to get the user ID of the author of the comment. I am able to get this information when the comment is posted on the page

Answer 1

Is it possible to get the author of a comment that is posted on a different page?

No, that information is not available to you any more.

https://developers.facebook.com/docs/graph-api/changelog/version2.11#gapi-90-pages:

/page/* — User information will not be included in GET responses for any objects owned by (on) a Page unless the request is made with a Page access token. This affects all nodes and edges that return data for objects owned by a Page.