Anh Tran

Hi Garth,

To check if the meta box is registered only for admin, please check the PHP file that has the meta box code. You might want to check something similar to this:

add_action( 'admin_init', 'your_function' );
function your_function() {
    add_filter( 'rwmb_meta_boxes', 'your_meta_boxes' );

// Or
if ( is_admin() ) {
    include 'your-meta-boxes.php';

Regarding the purchase: yes, you only need the Frontend Submission extension.

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