AVG ENhanced Firewall problem

Since updating AVG Internet Security today (3rd June 2020) my internet connection will not work unless I completely disable the enhanced firewall.
Clearing the firewall rules made no difference, nor did changing the network type.
Is this a known issue?
Does anyone have any other steps I can try to get this working?

Hi Gareth.
We're here to help.
Sometimes an update requires a PC restart to install completely. Please reboot your PC once and verify the issue.
If it persists, please repair AVG and check if that resolves the issue.

Hi Gareth.
We're here to help.
Sometimes an update requires a PC restart to install completely. Please reboot your PC once and verify the issue.
If it persists, please repair AVG and check if that resolves the issue.