Enhanced firewall

Warning says enhanced fire wall turned off. When you go to turn it on it says enhanced firewall not available.
What do you do now?

Hi Margaret.
We apologize for the inconvenience caused.
We request you to open AVG Internet Security program window.
Click on "Menu–>Settings–>Troubleshooting".
Scroll down to "Reset All Settings" and click on "reset to default" option.
Restart the PC and you should get the AVG Firewall turned on.