Can you check your browser history to get the exact site address. Is this the site? http://emule.org/ If yes then try the contact details.
BTW did you know LW beta 4.13 now has torrent support. Other than that, Azureus is best for mac. http://en.wikipedia.org/wiki/Azureus. If you need tips about the torrents then send me a message by clicking on my username.

I'll probably be offline by the time you reply but hopefully another member will be around. It's that time of year. And I've just done a long shift as an unpaid forum helper.