OK after reading this whole thread their something no one pointed out,Do you have a Firewall or Anti-Virus on your computer? that might be causing the problem.
does he have a router if yes than i think i know the proplem
i can play age of time multiplayer
Egh, you seem like an idiot anyway. Just reenter your key, goddamn.
4....
are you sure that no one else have your key?
Lol you don't have it 4 years lol you registered on forums 2 Years ago
Is blockland on your exceptions list in your firewall settings?
Are you correctly clicking on a server, then pressing the "Join" button.
its avg set to allow all