The snippet is on the page, the site is registered, and no data is arriving. Almost always it is one of five things, and they are quickest to rule out in this order.
Things to check
The site is active. A paused site stops serving a working tracker, and its snippet will not load.
The domain matches. Requests are only accepted from the domain you registered and its subdomains. A staging host on a different domain is refused.
The product is switched on. The snippet loads for a registered site, but collects nothing until at least one product is enabled for it.
The site ID is right. The ID belongs in the script URL itself, not in a separate attribute:
<script src="https://t.skomi.com/s/your-site-id.js" defer></script>Give it a minute. Changes to which products are enabled reach live sites within a few minutes.
If the snippet is fine and it is only your own visits that are missing, the site may be excluding them on purpose. Check excluding traffic.
Back to installing the snippet.