The same 403 error occurs for the simple static test.html file, so the problem does not appear to be related to Site.pro or PHP.
Expected behavior
The static HTML file should open normally in the browser.
Attempted solutions
Confirmed that the hosting account is Active.
Confirmed that the domain points to htdocs.
Confirmed that index.php exists directly in htdocs.
Checked the .htaccess file.
Deleted index2.html.
Created a simple static test.html file in htdocs.
The static HTML file also returns 403.
Could you please check whether there is a server-side or account/domain configuration issue causing the 403 error?
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