Facebook groupsApi & group_access_member_info problem

I have a public Facebook group and I am trying to get the posts and the author of the post via graphql. My app has been approved by Facebook and I have installed it in my group. Also, it is live

My problem is that when I send a get request I can see only my name and ID and I can’t see other names. I can see their posts just fine but without their info.

All the users inside my group have given me access to their information. For example this user

Also I notice that if i send a get request to this url

I am getting back a list only with my user. I expected to get a list with all the users who allow me access to their data.

Thanks in advance