as per Nev's post this sounds like a config issue, can i get you to create a support ticket for this?
http://support.qbik.com/index.php?_m=tickets&_a=submitIf you could include the following files then we can load up your config here to see what is going on.
1. WinGate Registry
GateKeeper --> Options menu --> Advanced --> Save Registry
2. WinGate Config Report
GateKeeper --> Options menu --> Advanced --> Save Config Report
3. ipconfig/all from one LAN Client
(Windows) Start menu --> Run --> cmd --> ipconfig/all >> C:\ipa-client.txt
4. ipconfig/all from the WinGate Server
(Windows) Start menu --> Run --> cmd --> ipconfig/all >> C:\ipa-server.txt