Apparently the launcher is trying to fetch patches from patch.discoverygc.net, this domain currently has nothing running and I can't recall DiscoveryGC ever used dot net as domain, it should be trying to fetch from https://patch.discoverygc.com which does have a patch history. If you can't get Laz or someone else to check it you could try to redirect this empty domain to the right IP using something like the hosts file/variable.
