How to redirect Subscribers on login to specific page, when logging in from a Page

Your logic is not quite correct as in some cases you will never hit the one return statement. Try this instead:

function custom_login_redirect( $redirect_to, $request, $user ) {
  if ( isset( $user->roles ) && is_array( $user->roles ) ) {
    if ( in_array( 'administrator', $user->roles ) || in_array( 'editor', $user->roles ) || in_array( 'author', $user->roles ) ) {
      return $redirect_to;
    } else {
      if ( in_array( 'subscriber', $user->roles ) && is_page() ) {
        return home_url('/member-resources/');
    } 
  } else {
    return $redirect_to;
  }
}
add_filter( 'login_redirect', 'custom_login_redirect', 10, 3 );