Hendra90,
you may want to review the documentation to verify that you have setup your PC properly and that you either have the PocketCloud Windows Companion installed on the PC or port forwarding enabled.

Roger Montalvo 
Visit our Dell Wyse Thin Client Knowledge Base and Manuals web site at www.wyse.com/KB
Visit our Dell Wyse PocketCloud Knowledge Base and Manuals web site at http://pocketcloudsupport.wyse.com/forums
[SIGPIC][/SIGPIC]

This may be a firewall blocking issue. When you try to access your home computer behind a router/firewall it blocks any incoming connections. To overcome this issue we have introduced "Auto-Discovery" feature. You can use your gmail login to discover the machines. Please refer "Automatic Discovery" section in our user guide.

I am having the same issue in trying to connect via 3g. It connects no worries through Wi-fi. I am unsure how to remedy this?