Why this works: Changing networks forces the app to re-authenticate. Logging out of Facebook/Google breaks the old token bond.
Go to Settings in the game (if you can reach it) or force a logout: Simcity Buildit 1100.7 Error
Screenshot the error and list what you’ve tried — it speeds up their reply. Why this works: Changing networks forces the app
Why this works: It forces your device to request a new IP address from your router and kills any stuck background network processes. Simcity Buildit 1100.7 Error