your tutorials cannot be found

I’m trying to create a SEO meta description, page descriptions (for Keywords in Title & Description), and SEO Title.
When I search for your tutorials, which are listed on google and look like they might be useful, the links are broken. They also do not exist in your knowledge base, despite the titles being there (https://rankmath.com/kb/titles-and-meta/ is a broken link).
Please advise, as I’m trying to tidy up my SEO.
Despite your own SEO Analysis throwing up these issues, clicking on the ‘how to fix’ box simple gives a description of what to do, not instructions or link on how to actually do it.