Hmm...Well Life isn't exactly fair and especially Anything on the Net. Because you feel the way you do doesn't mean that you will get a fair shake, or even a discount.
I don't use LW any longer for several reasons, some of which you are experiancing as we speak.
I would recommend trying Phex if you want to continue to use a Gnutella Client.
See Phex in my Sig.
Other than that, If You still insist on a Pro Version of LW then You will Have to Re-purchase.
It's all about the Almighty Dollar for the LW Boys.

__________________
I Don't Suffer From Insanity, I Enjoy Every Minute of it