I have the same problem. Except I opted for the lifetime membership w/ Limewire....cost me around $30, I never received an email from them, but my computer crashed last week & now Limewire says they don't recognize my email address. It's the only one I have, so I'm sure, if asked, that's the one I would've listed. There doesn't seem anyway to contact them, since I don't seem to exist in their email list.
Any suggestions would be most appreciated.