Portfolio Sub URL slug assignment error

Site URL: https://www.thewarriorsanctuary.org/amaroo/

I am updating the url slug on my portfolio sub-sites. And when i changed them to, for example https://www.thewarriorsanctuary.org/amaroo/temazcal-under-construction the page was created, but, when i click on the link from the actual site, it tries to take me to the original sub url (e.g. - amaroo/project-three-8zgh7-99y28) how do I update this link so that it will take me to the updated sub url slug when it is selected on the site?

If i just type in the full url, the sub url page exists, but the link just wont take me there and in some instances it will actually give the following error:

We couldn't find the page you were looking for. This is either because:

There is an error in the URL entered into your web browser. Please check the URL and try again.

The page you are looking for has been moved or deleted.