WearRoom is a single script tag on your product page, so any WooCommerce setup works: classic themes, block themes, FSE storefronts, multi-vendor builds. No plugin to install, no theme to switch.
Block themes (FSE) work the same way — drop the div into a Custom HTML block inside the product template, and the script into the global footer template. If you cannot edit theme files, WPCode or Code Snippets handles both with no child theme.