Hey Ole, (@Blak2K3),
Welcome to our community!
You’re absolutely right to check the HTML output — and your findings make total sense.
Just to clarify how Sitejet handles this:
Sitejet currently updates the page title and meta description, but it does not automatically output Google’s new Site Name markup (for example the og:site_name meta tag). This is why you don’t see any change in the HTML when you update the “Website Name”.
If you want Google to pick up a Site Name, you can add it manually:
Website settings → SEO / Meta → Meta tags (Additional header details)
<meta property="og:site_name" content="ABC">
This injects the correct tag into the <head> of your published site.
After that, request re-indexing in Google Search Console and Google will usually update the snippet once it recrawls the page.
Hope that clears it up a bit — and thanks for raising the question, it helps others too!