I generate Token with Permissions: pages_show_list read_page_mailboxes pages_messaging pages_messaging_subscriptions pages_read_engagement pages_manage_metadata pages_read_user_content pages_manage_engagement. And i use this token to read Message from messanger. But I dont have field "message". I use endPoint: https://graph.facebook.com/v20.0/{page_id}/conversations&access_token={token}. And i try with: https://graph.facebook.com/v20.0/{id_conversation}?fields=messages&access_token={token}. But still i dont have field with message content(i have id and TimeStamps). I read something about App review. I must send request with App Review? And what if i send it? I must wait for accept?