The Products section in wp-admin panel doesn’t depend on the theme. If you select default WordPress theme you’ll see the same issue. This is WordPress configuration.
To fix the errors you need edit files via FTP, open the file wp-content/themes/carrolBoyesNZ/woocommerce/cart/shipping-calculator.php on line 67 and replace
wp_nonce_field and the file wp-content/themes/carrolBoyesNZ/woocommerce/checkout/form-checkout.php on line 3 and replace
One standard license is valid only for 1 project. Running multiple projects on a single license is a copyright violation.