Hello, Websitedude1985,
4/ If a company field is not required, please change the value – https://prnt.sc/dyeL5Hy-Jfml (Theme Options -> WooCommerce -> Checkout).
5/ After trying to buy it, we saw that there really is a problem, but something different. Please check the video in the Private Content area.
6/ We noticed that on your website you have extra query param added to wp_http_referer input -> https://prnt.sc/RoWJnEmgPxJ8 Do you know where could it come from? Because we saw that you have a bit modifications with permalinks in your child-theme/functions.php which may cause the issues you have.
7. Please also check if it works fine with another browser – maybe the cookies are stuck somehow.
Kind Regards,
8theme team