A:
The game cannot communicate with the authentication server for some reason. You may have some security software such as Windows_Firewall or ZoneAlarm that is preventing Blockland from connecting.
I don't have that stuff
A:
One of the following has occured:
* Someone is using your key from a different IP address
* Someone is using your key from the same IP, but has changed the name on the account (from the main menu)
* Internet failure for the host
* Master server is down (unlikely but possible)
I never shared my key...