Changing Domain Name and URL

I FOLLOWED THE INSTRUCTIONS FROM YOUR WEBSITE AS FOLLOWS:-
Moving a website and changing your domain name or URLs (i.e. from https://example.com/site to https://example.com, or https://example.com to https://example.net) requires the following steps – in sequence.
1. Download your existing site files.
2. Export your database – go in to MySQL and export the database.
3. Move the backed up files and database into a new folder – somewhere safe – this is your site backup.
4. Log in to the site you want to move and go to Settings > General, then change the URLs. (ie from https://example.com/ to https://example.net ) – save the settings and expect to see a 404 page.
5. Download your site files again.
6. Export the database again.
7. Edit wp-config.php with the new server’s MySQL database name, user and password.
8. Upload the files.
9. Import the database on the new server.

I did this so many times, I’m now dreaming about it and all I get when I go to the new URL is it asking me to do a complete new install.

The page I need help with: [log in to see the link]