User blog comment:Dragonjet/Troubleshooting the Error Screen/@comment-25366430-20140830141844/@comment-1820055-20140831025114

if you're using KC3 then you dont need to connect to VPN. try again from logging in to DMM without VPN and just use cookie method.
 * 1) login to DMM
 * 2) make sure Region Cookies is enabled from KC3 menu
 * 3) set language to japanese
 * 4) refresh once
 * 5) go to the kancolle play page