WordPress.org

My code isn't being highlighted

This might mean that the theme you are using doesn't call wp_footer before the closing body tag. The javascript that applies the highlighter is attached to the wp_footer action - either try another theme (the default wordpress theme will work) or add the theme by typing the following inside the closing body tag:

<?php wp_footer(); ?>

My code should be formatted as *x, but is showing up as plain*

If you are specifying a format, are you using one from the available formats list (see the Description page)? If you are not specifying a format, does the file have a correct extension for the file type or is the web page returning with the correct Content-Type header?

I'm still stuck

Get in touch, I'll see what I can do!