The first link is to asstr.org which isn’t this site. I’m not sure the best email contact to raise with them – they’ve got copyright@asstr.org and story-admin@asstr.org but who knows if those mailboxes are still monitored? admin@Asstr.org may also be worth a shot.
This site is http://www2.adult-fanfiction.org so if you got a link to it on the adult-fanfiction.org domain the mods can look at it.