If you are reading this on a Dreamcast or Flycast emulator, your browser has successfully connected to this web server over standard HTTP.
This confirms that the host is NOT blocking unencrypted traffic.
This page uses only the most basic HTML tags that have existed since 1998. There is no CSS or JavaScript.
Since this simple page works, any problems with loading your main site are almost certainly caused by:
1. Your site using PHP (which needs a special host, not Neocities/GitHub).
2. Your site's code using incompatible CSS or JavaScript features.
3. Your site's files being in the wrong directory on the server.
You can now proceed with confidence!