AVG is blocking access to a trusted site

Hello Glyn,
I'm sorry to hear about this. I request you to change AVG Firewall network profile to private (open AVG Internet Security > menu > settings > components > firewall > customize > network profile > change all the network public to private), please to Firewall customize settings again > scroll down > click on system rules > enable all the system rules if it's not configured, please click Ok and check if you can access all the websites with enabled AVG Internet Security.
Best regards,
Alok.

cannot access one of my trusted sites
Hello Glyn,
I'm sorry to hear about this. I request you to change AVG Firewall network profile to private (open AVG Internet Security > menu > settings > components > firewall > customize > network profile > change all the network public to private), please to Firewall customize settings again > scroll down > click on system rules > enable all the system rules if it's not configured, please click Ok and check if you can access all the websites with enabled AVG Internet Security.
Best regards,
Alok.