Heya, just encountered this confusing error, and found an easy fix to prevent any scare/headaches for people who did not have their games linked to mobage. Here's the error: Keep in mind this happened on Android, so Iphone users might have to do something else to fix it. Go to the General Settings on your phone, then Application manager. Hit up the FF:RK JP app, then simply press "Clear Cache". Do not press "Clear Data", has it basically wipes out the data of your game, while the cache only removes additional and connexion data (That are redownloaded when launching the game). I did try to use a VPN, but it really seems to be connexion info corruption server wise. Hope this helps.