[Closed] WPML still detects some custom fields from the plugins that were removed very long time ago. Can it ...

Thanks for your patience.

I have escalated this to our 2nd Tier Support and I will come back to you once I've feedback.

Thank you for your patience. Here is the feedback from our 2nd Tier Support:

We have generated this snippet using ChatGPT. The suggestion is to insert it into the functions.php file and replace 'custom_field_1'... with the specific fields he wishes to remove.

However:

Please note that this falls outside the scope of WPML support.
We strongly recommend testing this on a staging website first and performing a full backup.

function remove_custom_fields_by_key($meta_keys = []) {
    global $wpdb;
    if (empty($meta_keys)) {
        return; // No meta keys provided
    }

    foreach ($meta_keys as $key) {
        $query = $wpdb->prepare("DELETE FROM $wpdb->postmeta WHERE meta_key = %s", $key);
        $wpdb->query($query);
    }
}

// Usage
add_action('wp_loaded', function() {
    remove_custom_fields_by_key(['custom_field_1', 'custom_field_2']);
});

Thank you for your response. Unfortunately, we haven't tested this as it's beyond the scope of our current support offerings. Our second-tier support has provided some methods for you to try instead.

DISCLAIMER: Please know that any snippet or code suggested here is for educational purposes only. they are not meant to be the final solution but instead meant to point you in the right direction and are out of the scope of our support so we can't nor will modify, improve, debug or maintain it.