Site showing 404 error without www

I changed Hosting recently, i signed up with my own domain, my page www.ukiku.ga works fine, but when i use it without www it shows a 404 page ukiku.ga

@UnbarredStream said:
I changed Hosting recently, i signed up with my own domain, my page www.ukiku.ga works fine, but when i use it without www it shows a 404 page ukiku.ga

It does not show 404 but a Dir Listing.

You need to put this code Options -Indexes to your .htaccess file to disable DIR Listing.

This error occurs because you don’t have an index file (such as index.php and index.html) on your website.

Since your account was created today, please see this article: https://infinityfree.net/support/why-doesnt-my-domain-work/