User blog comment:PurpleVoid/Game just stopped working/@comment-25763904-20160807144328

Some really good technicians seemed to answer here before ^^

First of all VC needs to start a stable and "fast" up to 1Mit/s. When it finally has started a slow [|EDGE] connection is enough to run VC a bit slowly but reliable.

Your problem might be a different. I can imagine that something with your new modem is odd. There might be a blocked port or when you play it on your PC the firewall of the OS could block it. I am not sure whether VC updates are simply HTTP or they use FTP for the transfer. So check Firewall and Ports and maybe loosen some restrictions if necessary.