It seems this is no longer working on checkout with WooCommerce 7.5.0.
You can see the ReCaptcha for a minute while WooCommerce loads the order_review section, but once the load finishes, the ReCaptcha disappears. Upon checkout, the following error appears:
Error: the Captcha didn’t verify.
There's also a console error: Uncaught DOMException: Blocked a frame with origin "https://www.google.com"
See https://wordpress.org/support/topic/checkout-issues-on-woocommerce-7-5-0/
WordPress 6.1.1
WooCommerce 7.5.1
WP reCaptcha Integration 1.2.5
Storefront Theme 4.2.0
PHP 8.0