Just an update, we have indentified the Borlabs Cookie plugin as the culprit. It provides an installable extension for “Simple Captcha for Turnstile” via their services library. Even with the actual content blocker and script blocker deactivated, Captchas on WooCommerce forms would not load (iframe missing). We have now found another solution and aren’t using the library package anymore. It now works like a charm on all the website forms. Thank you for your work on this plugin!