The following code is required for the terms and conditions checkbox to land just above the final Complete Order button:
add_action( 'init', 'my_child_move_legal_checkboxes', 50 ); function my_child_move_legal_checkboxes() { remove_action( 'woocommerce_review_order_after_payment', 'woocommerce_gzd_template_render_checkout_checkboxes', 10 ); add_action( 'woocommerce_gzd_review_order_before_submit', 'woocommerce_gzd_template_render_checkout_checkboxes', 10 ); }