add_filter( 'wcfm_is_allow_my_account_store_order_pdf_invoice_download', function( $allow ) {
    if( is_user_logged_in() ) {
        $user = wp_get_current_user();
        if( in_array( 'customer', $user->roles ) || in_array( 'subscriber', $user->roles ) ) {
            $allow = false;
        }
    }
    return $allow;
} );