Wordpress /users/me endpoint request forbidden - rest

Question

Using Wordpress's plugin WP REST API version 1, there is an endpoint called /users/me which response with data for the currently logged-in user. When I requested /users/me I got 403 Request Forbidden error. But If I requested /users/1 (where 1 is the user ID) then everything works. So why am I getting 403 error for /users/me endpoints? I'm using Postman to send my request:
THIS WORKS (userID 1 is the currently logged-in user):
http://example.com/wp-json/users/1?access_token={myAccessToken}
DOESN'T WORK:
http://example.com/wp-json/users/me?access_token={myAccessToken}
However, when using WP REST API version 2, /users/me works but it only returns a subset of what version 1 would have returned. The data is incomplete by comparison (i.e. email, first name, last name ...etc)
http://example.com/wp-json/wp/v2/users/me?access_token={myAccessToken}
{
"avatar_urls": {
"24": "http://2.gravatar.com/avatar/29b3ef85f13fedb43f84e6cb4a634e73?s=24&d=mm&r=g",
"48": "http://2.gravatar.com/avatar/29b3ef85f13fedb43f84e6cb4a634e73?s=48&d=mm&r=g",
"96": "http://2.gravatar.com/avatar/29b3ef85f13fedb43f84e6cb4a634e73?s=96&d=mm&r=g"
},
"description": "",
"id": 1,
"link": "http://example.com/author/admin/",
"name": "admin",
"url": "",
"_links": {
"self": [
{
"href": "http://example.com/wp-json/wp/v2/users/1"
}
],
"collection": [
{
"href": "http://example.com/wp-json/wp/v2/users"
}
]
}
}