Update the page content in File Manager, but it is not reflected in the website

[KangJL]

Of course it is not reflected.
Due to this

You need to correct the nameservers first

How to point your domain name to InfinityFree nameservers

Before you can add your domain name to your hosting account, you need to point it to the InfinityFree nameservers. The nameservers of your domain name are a setting at your domain registrar to allow you to host a domain name with a different provider. So you need to change these settings at the site where you bought your domain name. Most registrars have different panels and we can’t cover them all in this guide. For this guide, we’ll use NameSilo as an example. Step 0: Find the correct namese…