One post is plenty :) Have patience.
We say this in every email and page regarding navigation code, at least we try to.
*Use the test link on your site maintenance screen to test for valid code.*
You saw it, and that's great. That' syour first evidence you installed it correctly. But the system operates on what has been reported to it. That is, what it sees. You have to press the test button (or wait a week or two for the system checker to find it on it's own, or an especially dilligent member/manager) on the site maintenance screen for the site in question. This triggers the system to look, analyze, and report back to you what it thinks the situation is.
Your site, after we tested it, now reports back as passing.