I posted this link earlier: all of a sudden will not connect (a fix to try)
& when you said you'd tried everything, I assumed you'd tied all the fixes in that link (including deleting the prefs folder & replacing the gnutella.net file).

It's up to you whether you want to try those fixes or not

There's no live LW support. Pro users have access to email support but that's not live & I doubt they'd be able to help you more than we can here, anyway.