WordPress Custom Fields tab gone after installing ACF Pro plugin

Question

I want to change some custom WooCommerce checkout fields (created by a checkout plugin) and these are stored as original WordPress custom fields.

But because I have installed the Advanced Custom Fields plugin, the original Custom Fields tab is gone.

I tried to add the following code to my function.php without any result:

add_filter('acf/settings/remove_wp_meta_box', '__return_false');

Just to be sure I deactivated the ACF Pro plugin to be 100% sure this was the issue and the tabs where back :)

Anyone an other idea to get the original Custom Fields tab back?

Answer 1

Your priority might not be enough. Try like this.

add_filter('acf/settings/remove_wp_meta_box', '__return_false', 20);

EDIT

Please try to initialize ACF with this code

function my_acf_init() {
    acf_update_setting('remove_wp_meta_box', false);
}

add_action('acf/init', 'my_acf_init');

Answer 2

In my case, I was registering a custom post type without declaring support for custom-fields. The other answers would have worked for standard pages.

$books_args =[
  'supports' => [ 'title', 'editor', 'author', 'custom-fields' ]
];
register_post_type( 'book', $books_args );

Obviously you would need to adapt this this to your custom post type