Is this plugin suitable to prevent bot credit card testing?

Hello,

I have a Woocommerce site that I’m trying to prevent from being used for card testing – i.e. bots placing orders and paying via credit card in order to test stolen credit card details.

I’ve installed this plugin, and enabled ‘WooCommerce Checkout Form’ on the ‘Where To Show’ settings page.

My questions:

• Does this setting add the captcha to both the Woocommerce checkout page, as well as the payment page? (i.e. the page where the credit card details are entered) – Or just the checkout page?
• Does the captcha refresh after every transaction attempt? – Or can the user solve the captcha once, then try multiple credit card details / transactions without solving it again?

Thanks!