I can open the published site only by specifying the page.php, how can i solve?

[WuTCC]

Hi, thank you in advance for attention.

My problem is the following: when I open the website published with the simple domain name www.example.domain I get out: "Forbidden You don't have permission to access this resource".
It works when I write www.example.domain/Home.php (html page was not working, the same writing came out).
It doesn't even come out if I write /home.php with a lowercase letter.
Publishing is done correctly.
The root folder in the hosting has the name of the simple address.

How can I do to be able to view the site even just by writing the normal address www.example.domain?
Do I have to change anything within my hosting provider's file manager? Thanks a lot again and best regards.

[Pablo]

Plesme make sure the home page is called 'index.php. Home.php is not a valid name for the landing page.
Also, most web servers are case sensitive. This is unrelated to WWB.