@SEOnly - There is no method by which you can "add" a directory to the site. You can "suggest", which is what you've done by posting a thread. All directories are reviewed to ensure they meet our guidelines.
In reference to your particular directory, the delay is quite simple. People are still suggesting in
that thread that you require a reciprocal. The confirmation email says thay you cannot find YOUR link on THEIR site. If you do not require a reciprocal, then that sort of message shouldn't exist.