I assume that by not responding you mean you cannot get Physical Web notifications.
What phone are you using? Android or iOS? Because Google dropped support for Physical Web on Chrome iOS, see this thread: Google stop supporting physical web on chrome IOS
Physical Web notifications are only displayed when they meet some conditions (for example they are using https). They are also checked against spam filters. From https://google.github.io/physical-web/try-physical-web:
Additionally, nearby broadcasted URLs must be public. The URL will be accessed by a Google service to resolve the URL and retrieve page metadata. If the page is not accessible from the Internet (for instance, it requires authentication or is only accessible from an internal network) then it will not appear in the list of results.
Finally, all URLs must resolve to an HTTPS URL. For our users’ security, we require all Physical Web pages be served over HTTPS. You may use a URL shortener that generates HTTP URLs as long as the shortened URL resolves to an HTTPS URL.
Some more information can be found here: The Physical Web