I got the same problem. I tried to redeem a Donators Ice item.
I said 'The item cannot be withdrawn' with the same code as u i think.
So i tried re-login. Next thing i know is that it gave me the...

Dear Fgunz,

Lately I've been having NAT in gunz and other games.
I was wondering if anyone could tell me, what I have to do with this so called portforwarding?
Like which ports I have to look at...

Yes, it was my antivirus software. When i reinstalled the launcher that Notorious post, I started the launcher and it immediately said it was my firewall.
First of all, kinda weird it didn't tell me...

If have already tried reinstalling with the Full Client | Mirror 3 - mediafire.com. It still doesn't show servers for me. :?

It automaticly runs the launcher as administrator

Dear Fgunz Staff,

Everytime I start gunz it shows no servers, this is since tuesday 5-1-2016.
Zachary advice me to take a look if my Windows firewall accepts the gunz.exe and it seems it already...

I totally agree to you man. This is just the reason why I hate ***** gunz and now it just like it.
Maybe the other new stuff would've been cool, but i didn't come that far after i saw my character...