Google indexed uncategorized categorized, changes do not show

Hello,

Before I built my website the “Hello Word” post from WordPress was created and now since the website is online it is EXACTLY this post that was indexed by Google with my website! So the first thing visitors of my website see is this “Hello World” post with nothing else in it.

I didn′t even know that this site still exists, just found out because of Google′s index and now I have been trying to delete / edit it for about 2 hours, but to no avail. I found out I cannot delete this. So I changed the category and this specific link should not exist anymore, but it still does. I no-indexed it in RankMath, but Google still indexes it, a category and a post that don′t exist anymore, but they do – if you understand what I mean. Google shows this “Hello world” site with the /category/uncategorized.

And the most “fun” part: The website link I provided here with this support request redirects to my website correctly, but the link on Google opens up this “Hello World” post to /category/uncategorized, also after clearing the cache.

How can I get rid of this “Hello World”, please? I deleted the post, the category I cannot delete. I changed the name of the category to “welcome” and posted “please click the menu above to get to website”, but it does not do what I tell it to. It shows “hello world.”

Visitors think my website does not exist or work and I lose customers.

Please help!
Thank you.

P.S.: I am sorry that I posted on the wrong forum before. I didn′t find the right forum.

• This topic was modified 3 years, 6 months ago by Jan Dembowski. Reason: Moved to Fixing WordPress, this is not an Everything else WordPress topic

The page I need help with: [log in to see the link]