The widget is licensed on a per-domain basis, meaning that the license is valid for one specific domain, such as example.com.
If your website operates on multiple sub-domains, like shop.example.com or blog.example.com, each of those subdomains is considered a separate web property and therefore requires its own individual license.
If you have 5 or more subdomains, fill out the Request Quote form.
In summary, a single license covers only one domain or sub-domain, and additional licenses are needed for any additional subdomains where the widget will be installed.