More issues with upload after page name change

I changed the name of one of my pages and as such it also changed the URL but that somehow seemed to have broken the page as I can’t upload it and the link if I copy and paste it from the page settings does not work. Video here blocs-issues also changing custom URL paths gives unpredictable results see image and this is the link if I copy it:

https://www.simpsondesertguide.com.au/Affiliate-Invite-Only.html but ofter upload to server page cant be found. Not Found

The requested URL was not found on this server.

Did you enter a web address in Project Settings? That is a preview url for the page, which includes this value.