Help with uploading html file

Website URL

kdbsradio.epizy.com

Error Message

When I tried using both the FTP program and the InfinityFree File Manager upload tool, the index.html file did not appear in the directory area after uploading.

Other Information

I was using WinSCP and the File Manager because I am a new user I am not able to upload a file yet to this support area. There are no errors the only thing that happens is after it looks like it loaded the file. I look at the list and my file is not there and when I go to the website address the 403 Forbidden page shows up.