Then it's probably after the sixth post. I knew it was one or the other.
But why the urgency to add a link to your very first post to WP? It's generally considered more polite to get to know a few people first, and the restriction is also a means of stopping "post-n-run" spammers. Not that I'm suggesting you would do this, but that's primarily why it exists.
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Giraffe: a ruminant with a view.