Why can't GitHub Pages see my site?

Question

GitHub

GitHub doesn't see my html site I'm trying to upload. The repository is created with the name username.github.io.

In fact, it randomly shows the site: it wants to show, it wants not. I don't know how it works. Ctrl + f5 helped, but now it doesn't always help.

https://lsingapore.github.io/

Answer 1

You don't have an index.html page file , so GitHub Pages automatically converts the README to an html page when the site is accessed. You have on the screen exactly the contents of the README.md file
Rename projectUN.html to index.html

Answer 2

Most likely, either the folder path in the repository itself is incorrectly specified, or the username is incorrectly set, which differs from your login on the github, can you have a turnip screen or the repository itself?