the whitelist is handled entirely by _G_ (shindoku) as he runs the server. he tries to have every member listed on the whitelist, so since youve been on the list longer than he has, it's likely that your name was just misspelled. the fastest way to is probably through steam.
The whitelist section does not exist because none of our din's have requested it, and they are the ones who always control the whitelist, if it does get added it will be in members information.