Raise Too-Far distance in Advanced menu at server start.
1: Double-Click Blockland Shortcut on your Desktop.
2: Wait for the game window to open.
3: Click the button "Start Game"
4: Click the button "Advanced" on the window for "Start Game"
5: Look for "Too-Far" on the list.
6: Make the number next to it Higher then before.
7: Hit Ok
8: Start Game
If that isn't specific enough, you should go play another game.