Going on http://192.168.1.1/ in my browser and logining in going to the applications and gaming here I'll show you
1. Make sure Blockland is using port 28100.
2. Make sure your static IP is set to 192.168.1.45 (CMD+R, cmd, ipconfig)
3. If your router has a "Virtual Server" advanced option use that.
4. Windows Firewall can be a bitch.
--LAST RESORT--
5. If your router has a DMZ option, use it.