You might've been redirected to the real LW site for download?? but who did you pay?? You've been scammed. There's no 24 month membership & no payment per month. You should contact your bank/CC company & report this. They may be able to cancel the transaction for you & will let you know if you should cancel your card.

Have a read through the 2 threads here. The first is general info about so-called memberships & page 5 has a list of scam sites.
The second has info & tips about getting a refund from scammers. Good luck

http://www.gnutellaforums.com/showthread.php?t=28751


http://www.gnutellaforums.com/showthread.php?t=44499