Hi, @omero !
I understand how important it is to offer a variety of payment options at checkout, so we want to make sure this is working for you and your customers.
To determine what might be preventing the credit card section from loading, I suggest previewing another theme to see if the issue persists. You can add one of Shopify’s free themes to troubleshoot.
If you’ve confirmed that the current theme is causing the problem, please contact our team via the Shopify Help Center so we can investigate further. Thank you!