Hi!
Found it! This code was on the function.php and was messing with ACF PRO:
// Connection error
add_filter('login_errors',create_function('$a', "return null;"));
function set_post_order_in_admin( $wp_query ) {
if ( is_admin() ) {
$wp_query->set( 'orderby', 'post_status' );
$wp_query->set( 'order', 'DESC' );
}
}
add_filter('pre_get_posts', 'set_post_order_in_admin' );
I removed it and it works just fine 🙂