Hi,
we are trying to use the Checkout Manager extension to make more fields in two rows using form-row-first and form-row-last classes. But somehow it always gets overwritten on the frontend. I already tried to disable all third party plugins except WooCommerce and Checkout Manager and also tried to use the Pro Theme without the child theme and it’s custom css – always the same.
Please put something in the cart and proceed to checkout to see the behavior for yourself. For a brief millisecond the two rows can be seen and then they get back to full width.