When adding a Website to your Fathom account, provide all the URLs, that should be considered as part of this website.
For example, if you have a website at https://www.example.com and a subdomain at https://help.example.com , then provide both URLs.
You also need to carefully provide the correct URL protocol - http or https . If you mention http://www.example.com whereas your website actually runs at https://www.example.com , Fathom will not run on it.
Website URLs are required for two reasons:
1. Fathom will work only when it is loaded on the correct domains that it is registered on.
2. When there are multiple domains, such as sub-domains, they will not be considered as referring websites.